microblaze_mmu_v2: Enable fork syscall for MMU and add fork as vfork for noMMU

Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S
index 3bb42ec..376d178 100644
--- a/arch/microblaze/kernel/syscall_table.S
+++ b/arch/microblaze/kernel/syscall_table.S
@@ -2,7 +2,11 @@
 	.long sys_restart_syscall	/* 0 - old "setup()" system call,
 					 * used for restarting */
 	.long sys_exit
-	.long sys_ni_syscall		/* was fork */
+#ifdef CONFIG_MMU
+	.long sys_fork_wrapper
+#else
+	.long sys_ni_syscall
+#endif
 	.long sys_read
 	.long sys_write
 	.long sys_open			/* 5 */