termios: Consolidate local mode definitions

This patch consolidates the termios symbolic constants used for local
mode with c_lflag member on its own header.  The Linux generic implementation
values match the kernel UAPI and each architecture with deviate values
have their own implementation (in this case alpha, mips, and powerpc).

No semantic change is expected, checked on a build against x86_64-linux-gnu,
alpha-linux-gnu, mips64-linux-gnu, and sparc64-linux-gnu.

	* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
	termios-c_lflag.h.
	* sysdeps/unix/sysv/linux/bits/termios-c_lflag.h: New file.
	* sysdeps/unix/sysv/linux/alpha/bits/termios-c_lflag.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/termios-c_lflag.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/bits/termios-c_lflag.h: Likewise.
	* sysdeps/unix/sysv/linux/bits/termios.h (ISIG, ISCANON, ECHO, ECHOE,
	ECHOK, ECHONL, NOFLSH, TOSTOP, IEXTEN): Move to termios-c_lflag.h.
	[__USE_MISC || (__USE_XOPEN && !__USE_XOPEN2K)] (XCASE): Likewise.
	[__USE_MISC] (ECHOCTL, ECHOPRT, ECHOKE, FLUSHO, PENDIN, EXTPROC):
	Likewise.
	* sysdeps/unix/sysv/linux/alpha/bits/termios.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/termios.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/termios.h: Likewise.

2 files changed, 46 insertions, 24 deletions

diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/termios-c_lflag.h b/sysdeps/unix/sysv/linux/powerpc/bits/termios-c_lflag.h
new file mode 100644
index 0000000000..e553787645
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/bits/termios-c_lflag.h
@@ -0,0 +1,45 @@
+/* termios local mode definitions.  Linux/powerpc version.
+   Copyright (C) 2019i Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _TERMIOS_H
+# error "Never include <bits/termios-c_lflag.h> directly; use <termios.h> instead."
+#endif
+
+/* c_lflag bits */
+#define ISIG	0x00000080
+#define ICANON	0x00000100
+#if defined __USE_MISC || (defined __USE_XOPEN && !defined __USE_XOPEN2K)
+# define XCASE	0x00004000
+#endif
+#define ECHO	0x00000008
+#define ECHOE	0x00000002
+#define ECHOK	0x00000004
+#define ECHONL	0x00000010
+#define NOFLSH	0x80000000
+#define TOSTOP	0x00400000
+#ifdef __USE_MISC
+# define ECHOCTL	0x00000040
+# define ECHOPRT	0x00000020
+# define ECHOKE	0x00000001
+# define FLUSHO	0x00800000
+# define PENDIN	0x20000000
+#endif
+#define IEXTEN	0x00000400
+#ifdef __USE_MISC
+# define EXTPROC 0x10000000
+#endif
diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/termios.h b/sysdeps/unix/sysv/linux/powerpc/bits/termios.h
index 8b6cbf5b2c..65dad319d5 100644
--- a/sysdeps/unix/sysv/linux/powerpc/bits/termios.h
+++ b/sysdeps/unix/sysv/linux/powerpc/bits/termios.h
@@ -52,30 +52,7 @@ typedef unsigned int	tcflag_t;
 #include <bits/termios-baud.h>
 
 #include <bits/termios-c_cflag.h>
-
-/* c_lflag bits */
-#define ISIG	0x00000080
-#define ICANON	0x00000100
-#if defined __USE_MISC || (defined __USE_XOPEN && !defined __USE_XOPEN2K)
-# define XCASE	0x00004000
-#endif
-#define ECHO	0x00000008
-#define ECHOE	0x00000002
-#define ECHOK	0x00000004
-#define ECHONL	0x00000010
-#define NOFLSH	0x80000000
-#define TOSTOP	0x00400000
-#ifdef __USE_MISC
-# define ECHOCTL	0x00000040
-# define ECHOPRT	0x00000020
-# define ECHOKE	0x00000001
-# define FLUSHO	0x00800000
-# define PENDIN	0x20000000
-#endif
-#define IEXTEN	0x00000400
-#ifdef __USE_MISC
-# define EXTPROC 0x10000000
-#endif
+#include <bits/termios-c_lflag.h>
 
 /* Values for the ACTION argument to `tcflow'.  */
 #define	TCOOFF		0