h8300: System call entry enable interrupt.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>

arch/h8300/kernel/entry.S

@@ -246,6 +246,7 @@ _system_call:
 	/* save top of frame */
 	mov.l	sp,er0
 	jsr	@set_esp0
+	andc	#0x3f,ccr
 	mov.l	sp,er2
 	and.w	#0xe000,r2
 	mov.l	@(TI_FLAGS:16,er2),er2