[PATCH] ppc32: add <linux/compiler.h> to <asm/sigcontext.h>

On ppc32, <asm/sigcontext.h> uses __user, but doesn't directly include
<linux/compiler.h>.  This adds that in.  Without this, glibc will not
compile.
Signed-off-by: NTom Rini <trini@kernel.crashing.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

include/asm-ppc/sigcontext.h

@@ -2,7 +2,7 @@
 #define _ASM_PPC_SIGCONTEXT_H
 
 #include <asm/ptrace.h>
-
+#include <linux/compiler.h>
 
 struct sigcontext {
 	unsigned long	_unused[4];