microblaze: Wire up recvmmsg syscall

Patch a2e2725541fad72416326798c2d7fa4dafb7d337 should
contain change in unistd.h too. The same problem
had MIPS.

Signed-off-by: Michal Simek <monstr@monstr.eu>

arch/microblaze/include/asm/unistd.h

@@ -382,8 +382,9 @@
 #define __NR_pwritev		364 /* new */
 #define __NR_rt_tgsigqueueinfo	365 /* new */
 #define __NR_perf_event_open	366 /* new */
+#define __NR_recvmmsg		367 /* new */
 
-#define __NR_syscalls		367
+#define __NR_syscalls		368
 
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__