x86/headers: Remove direct sigcontext32.h uses

Now that all sigcontext types are defined in asm/sigcontext.h,
remove the various sigcontext32.h uses in the kernel.

We still keep the header itself, which includes sigcontext.h, in
case user-space relies on it.

Acked-by: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1441438363-9999-15-git-send-email-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/ia32/ia32_signal.c

@@ -26,7 +26,7 @@
 #include <asm/ptrace.h>
 #include <asm/ia32_unistd.h>
 #include <asm/user32.h>
-#include <asm/sigcontext32.h>
+#include <asm/sigcontext.h>
 #include <asm/proto.h>
 #include <asm/vdso.h>
 #include <asm/sigframe.h>

arch/x86/include/asm/fpu/signal.h

@@ -5,7 +5,7 @@
 #define _ASM_X86_FPU_SIGNAL_H
 
 #ifdef CONFIG_X86_64
-# include <asm/sigcontext32.h>
+# include <asm/sigcontext.h>
 # include <asm/user32.h>
 struct ksignal;
 int ia32_setup_rt_frame(int sig, struct ksignal *ksig,

arch/x86/include/asm/ia32.h

@@ -10,7 +10,7 @@
  * 32 bit structures for IA32 support.
  */
 
-#include <asm/sigcontext32.h>
+#include <asm/sigcontext.h>
 
 /* signal.h */
 

arch/x86/include/uapi/asm/sigcontext32.h

@@ -1,7 +1,7 @@
 #ifndef _ASM_X86_SIGCONTEXT32_H
 #define _ASM_X86_SIGCONTEXT32_H
 
-/* Signal context definitions for compat 32-bit programs: */
+/* This is a legacy file - all the type definitions are in sigcontext.h: */
 
 #include <asm/sigcontext.h>