sh: Provide movli.l/movco.l-based cmpxchg.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/include/asm/system.h b/arch/sh/include/asm/system.h
index 056d68c..fbac113 100644
--- a/arch/sh/include/asm/system.h
+++ b/arch/sh/include/asm/system.h
@@ -70,6 +70,8 @@
 
 #ifdef CONFIG_GUSA_RB
 #include <asm/cmpxchg-grb.h>
+#elif defined(CONFIG_CPU_SH4A)
+#include <asm/cmpxchg-llsc.h>
 #else
 #include <asm/cmpxchg-irq.h>
 #endif