x86: fix usage of .section .sched.text in assembler code

Without this patch the linker will generate a section
named .sched.text.1 which is unexpected.
This is because the gcc generated section has "ax" but the
assembler usage of .sched.text lacks the "ax" specifier.

It would be better to have a definition we could use from
assembler code but I did not find a suitable header
file for it.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

arch/x86/lib/semaphore_32.S

@@ -29,7 +29,7 @@
  * registers (%eax, %edx and %ecx) except %eax whish is either a return
  * value or just clobbered..
  */
-	.section .sched.text
+	.section .sched.text, "ax"
 ENTRY(__down_failed)
 	CFI_STARTPROC
 	FRAME

arch/x86/lib/thunk_64.S

@@ -33,7 +33,7 @@
 	.endm
 	
 
-	.section .sched.text
+	.section .sched.text, "ax"
 #ifdef CONFIG_RWSEM_XCHGADD_ALGORITHM
 	thunk rwsem_down_read_failed_thunk,rwsem_down_read_failed
 	thunk rwsem_down_write_failed_thunk,rwsem_down_write_failed