Use ALIAS_SYMBOL for assembler aliasing.

Change-Id: I8d04d2da0a1ac440cc9044fc819c9a8eda5ff17d
diff --git a/libc/arch-mips/bionic/setjmp.S b/libc/arch-mips/bionic/setjmp.S
index 1c26553..bed9562 100644
--- a/libc/arch-mips/bionic/setjmp.S
+++ b/libc/arch-mips/bionic/setjmp.S
@@ -352,12 +352,5 @@
 	jal	abort
 END(siglongjmp)
 
-
-	.globl	longjmp
-	.type	longjmp, @function
-	.equ	longjmp, siglongjmp	# alias for siglongjmp
-
-
-	.globl	_longjmp
-	.type	_longjmp, @function
-	.equ	_longjmp, siglongjmp	# alias for siglongjmp
+ALIAS_SYMBOL(longjmp, siglongjmp)
+ALIAS_SYMBOL(_longjmp, siglongjmp)