sh: Fixup misaligned data for sh2 lockdep.

lockdep/irqflags tracing on SH-2 ends up with a misaligned
branch, fix it.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/cpu/sh2/entry.S b/arch/sh/kernel/cpu/sh2/entry.S
index c16dc8f..ee8f1fe 100644
--- a/arch/sh/kernel/cpu/sh2/entry.S
+++ b/arch/sh/kernel/cpu/sh2/entry.S
@@ -311,6 +311,7 @@
 	rte
 	 nop
 
+	.align 2
 #ifdef CONFIG_TRACE_IRQFLAGS
 1:     .long   trace_hardirqs_off
 #endif