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/lib/divsi3.S b/arch/blackfin/lib/divsi3.S
index 3e29861..2ac59c7 100644
--- a/arch/blackfin/lib/divsi3.S
+++ b/arch/blackfin/lib/divsi3.S
@@ -44,6 +44,7 @@
  */
 
 .global   ___divsi3;
+.type ___divsi3, STT_FUNC;
 
 #ifdef CONFIG_ARITHMETIC_OPS_L1
 .section .l1.text
@@ -214,3 +215,5 @@
 .Lret_zero:
   R0 = 0;
   RTS;
+
+.size ___divsi3, .-___divsi3