s390/extable: prefer local labels in .set directives

Use local labels in .set directives to avoid potential compile errors
with LTO + clang. See commit 334865b2 ("x86/extable: Prefer local
labels in .set directives") for further details.

Since s390 doesn't support LTO currently this doesn't fix a real bug
for now, but helps to avoid problems as soon as required pieces have
been added to llvm.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

arch/s390/include/asm/asm-extable.h

@@ -26,16 +26,16 @@
 	stringify_in_c(.long	(_target) - .;)				\
 	stringify_in_c(.short	(_type);)				\
 	stringify_in_c(.macro extable_reg reg;)				\
-	stringify_in_c(.set found, 0;)					\
-	stringify_in_c(.set regnr, 0;)					\
+	stringify_in_c(.set .Lfound, 0;)				\
+	stringify_in_c(.set .Lregnr, 0;)				\
 	stringify_in_c(.irp rs,r0,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,r13,r14,r15;) \
 	stringify_in_c(.ifc "\reg", "%%\rs";)				\
-	stringify_in_c(.set found, 1;)					\
-	stringify_in_c(.short regnr;)					\
+	stringify_in_c(.set .Lfound, 1;)				\
+	stringify_in_c(.short .Lregnr;)					\
 	stringify_in_c(.endif;)						\
-	stringify_in_c(.set regnr, regnr+1;)				\
+	stringify_in_c(.set .Lregnr, .Lregnr+1;)			\
 	stringify_in_c(.endr;)						\
-	stringify_in_c(.ifne (found != 1);)				\
+	stringify_in_c(.ifne (.Lfound != 1);)				\
 	stringify_in_c(.error "extable_reg: bad register argument";)	\
 	stringify_in_c(.endif;)						\
 	stringify_in_c(.endm;)						\