sparc: make SA_NOMASK a synonym of SA_NODEFER

Unlike other architectures, sparc currently has no SA_NODEFER definition
but only the older SA_NOMASK.  Since SA_NOMASK is the historical name for
SA_NODEFER, add SA_NODEFER and copy what other architectures do by making
SA_NOMASK a synonym for SA_NODEFER.

Signed-off-by: Matt Fleming <[email protected]>
Acked-by: Oleg Nesterov <[email protected]>
Cc: "David S. Miller" <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Author: Matt Fleming

arch/sparc/include/asm/signal.h

@@ -143,10 +143,11 @@ struct sigstack {
 #define SA_ONSTACK	_SV_SSTACK
 #define SA_RESTART	_SV_INTR
 #define SA_ONESHOT	_SV_RESET
-#define SA_NOMASK	0x20u
+#define SA_NODEFER	0x20u
 #define SA_NOCLDWAIT    0x100u
 #define SA_SIGINFO      0x200u
 
+#define SA_NOMASK	SA_NODEFER
 
 #define SIG_BLOCK          0x01	/* for blocking signals */
 #define SIG_UNBLOCK        0x02	/* for unblocking signals */