[SPARC64]: Mark __ex_table section correctly.

We must use the "a" (allocate) attribute every time we
emit an entry into the __ex_table section.

For consistency, use "a" instead of #alloc which is some
Solaris compat cruft GNU as provides on Sparc.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/solaris/entry64.S b/arch/sparc64/solaris/entry64.S
index eb314ed..f170324 100644
--- a/arch/sparc64/solaris/entry64.S
+++ b/arch/sparc64/solaris/entry64.S
@@ -217,7 +217,7 @@
 	ba,pt		%xcc, ret_from_solaris
 	 nop
 
-	.section	__ex_table,#alloc
+	.section	__ex_table,"a"
 	.align		4
 	.word		exen, exenf