[SPARC/SPARC64]: Fix usage of .section .sched.text in assembler code.

ld will generate an unique named section when assembler do not use
"ax" but gcc does. Add the missing annotation.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/lib/rwsem.S b/arch/sparc64/lib/rwsem.S
index 75f0e6b..1a4cc56 100644
--- a/arch/sparc64/lib/rwsem.S
+++ b/arch/sparc64/lib/rwsem.S
@@ -6,7 +6,7 @@
 
 #include <asm/rwsem-const.h>
 
-	.section	.sched.text
+	.section	.sched.text, "ax"
 
 	.globl		__down_read
 __down_read: