Blackfin arch: add proper ENDPROC()

add proper ENDPROC() to close out assembly functions
so size/type is set properly in the final ELF image

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

diff --git a/arch/blackfin/kernel/entry.S b/arch/blackfin/kernel/entry.S
index 5880b27..65c5ba4 100644
--- a/arch/blackfin/kernel/entry.S
+++ b/arch/blackfin/kernel/entry.S
@@ -58,10 +58,12 @@
 	RESTORE_ALL_SYS
 	p0 = reti;
 	jump (p0);
+ENDPROC(_ret_from_fork)
 
 ENTRY(_sys_fork)
 	r0 = -EINVAL;
 	rts;
+ENDPROC(_sys_fork)
 
 ENTRY(_sys_vfork)
 	r0 = sp;
@@ -72,6 +74,7 @@
 	SP += 12;
 	rets = [sp++];
 	rts;
+ENDPROC(_sys_vfork)
 
 ENTRY(_sys_clone)
 	r0 = sp;
@@ -82,6 +85,7 @@
 	SP += 12;
 	rets = [sp++];
 	rts;
+ENDPROC(_sys_clone)
 
 ENTRY(_sys_rt_sigreturn)
 	r0 = sp;
@@ -92,3 +96,4 @@
 	SP += 12;
 	rets = [sp++];
 	rts;
+ENDPROC(_sys_rt_sigreturn)