microblaze: Wire-up new system calls

Wire up three system calls
sendmmsg/process_vm_readv/process_vm_writev

All tested by testing apps.
Look at:
net: Add sendmmsg socket system call
(sha1: 228e548e)
Cross Memory Attach
(sha1: fcf63409)
Signed-off-by: NMichal Simek <monstr@monstr.eu>

arch/microblaze/include/asm/unistd.h

@@ -391,8 +391,11 @@
 #define __NR_clock_adjtime	373
 #define __NR_syncfs		374
 #define __NR_setns		375
+#define __NR_sendmmsg		376
+#define __NR_process_vm_readv	377
+#define __NR_process_vm_writev	378
 
-#define __NR_syscalls		376
+#define __NR_syscalls		379
 
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__

arch/microblaze/kernel/syscall_table.S

@@ -380,3 +380,6 @@ ENTRY(sys_call_table)
 	.long sys_clock_adjtime
 	.long sys_syncfs
 	.long sys_setns			/* 375 */
+	.long sys_sendmmsg
+	.long sys_process_vm_readv
+	.long sys_process_vm_writev