[SPARC64]: Do not include compat.h from asm-sparc64/signal.h any more.

It's not needed, now that all of that stuff is now in
asm/compat_signal.h, and it breaks the build too :-)
Signed-off-by: David S. Miller <davem@davemloft.net>

include/asm-sparc64/signal.h

@@ -8,7 +8,6 @@
 #ifndef __ASSEMBLY__
 #include <linux/personality.h>
 #include <linux/types.h>
-#include <linux/compat.h>
 #endif
 #endif