[SPARC32]: Silence sparc32 warnings on missing syscalls.

Silence sparc32 warnings on missing syscalls, these won't be added.
This patch is based on this mail:
http://www.mail-archive.com/linux-arch@vger.kernel.org/msg02571.htmlSigned-off-by: Martin Habets <errandir_news@mph.eclipse.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/asm-sparc/unistd.h

@@ -333,6 +333,15 @@
 
 #define NR_SYSCALLS		315
 
+/* Sparc 32-bit only has the "setresuid32", "getresuid32" variants,
+ * it never had the plain ones and there is no value to adding those
+ * old versions into the syscall table.
+ */
+#define __IGNORE_setresuid
+#define __IGNORE_getresuid
+#define __IGNORE_setresgid
+#define __IGNORE_getresgid
+
 #ifdef __KERNEL__
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR