Add a stub header file "feedback.h," needed to compile glibc and linux.

Add a stub header file "feedback.h," needed to compile glibc and
linux.
	* config.gcc (tilegx-*-linux*): Add feedback.h.
	(tilepro-*-linux*): Likewise.
	* config/tilegx/feedback.h: New file.
	* config/tilepro/feedback.h: New file.

From-SVN: r190451

gcc/ChangeLog

+2012-08-16  Walter Lee  <walt@tilera.com>
+
+	* config.gcc (tilegx-*-linux*): Add feedback.h.
+	(tilepro-*-linux*): Likewise.
+	* config/tilegx/feedback.h: New file.
+	* config/tilepro/feedback.h: New file.
+
 2012-08-16   Diego Novillo  <dnovillo@google.com>
 
 	Revert

gcc/config.gcc

@@ -2440,6 +2440,7 @@ tilegx-*-linux*)
 	extra_objs="mul-tables.o"
 	c_target_objs="tilegx-c.o"
 	cxx_target_objs="tilegx-c.o"
+	extra_headers="feedback.h"
 	;;
 tilepro-*-linux*)
 	tm_file="elfos.h gnu-user.h linux.h glibc-stdint.h tilepro/linux.h ${tm_file}"
@@ -2447,6 +2448,7 @@ tilepro-*-linux*)
 	extra_objs="mul-tables.o"
 	c_target_objs="tilepro-c.o"
 	cxx_target_objs="tilepro-c.o"
+	extra_headers="feedback.h"
 	;;
 v850-*-rtems*)
 	target_cpu_default="TARGET_CPU_generic"

gcc/config/tilegx/feedback.h

+/* This file is currently empty and serves as a placeholder.  */

gcc/config/tilepro/feedback.h

+/* This file is currently empty and serves as a placeholder.  */