microblaze: Remove rt_sigsuspend wrapper

Generic rt_sigsuspend syscalls doesn't need any asm wrapper.
Signed-off-by: Michal Simek <monstr@monstr.eu>

arch/microblaze/kernel/entry.S

@@ -500,17 +500,6 @@ C_ENTRY(sys_execve):
 	brid	microblaze_execve;	/* Do real work (tail-call).*/
 	nop;
 
-C_ENTRY(sys_rt_sigsuspend_wrapper):
-	swi	r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
-	swi	r4, r1, PTO+PT_R4;
-	la	r7, r1, PTO;		/* add user context as 3rd arg */
-	brlid	r15, sys_rt_sigsuspend;	/* Do real work.*/
-	nop;
-	lwi	r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
-	lwi	r4, r1, PTO+PT_R4;
-	bri ret_from_trap /* fall through will not work here due to align */
-	nop;
-
 C_ENTRY(sys_rt_sigreturn_wrapper):
 	swi	r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */
 	swi	r4, r1, PTO+PT_R4;

arch/microblaze/kernel/signal.c

@@ -44,7 +44,6 @@
 
 asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset, int in_sycall);
 
-
 asmlinkage long
 sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
 		struct pt_regs *regs)

arch/microblaze/kernel/syscall_table.S

@@ -183,7 +183,7 @@ ENTRY(sys_call_table)
 	.long sys_rt_sigpending
 	.long sys_rt_sigtimedwait
 	.long sys_rt_sigqueueinfo
-	.long sys_rt_sigsuspend_wrapper
+	.long sys_rt_sigsuspend
 	.long sys_pread64		/* 180 */
 	.long sys_pwrite64
 	.long sys_chown