Disintegrate asm/system.h for Sparc

Disintegrate asm/system.h for Sparc.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: sparclinux@vger.kernel.org
diff --git a/arch/sparc/kernel/reboot.c b/arch/sparc/kernel/reboot.c
index 006a42d..eba7d91 100644
--- a/arch/sparc/kernel/reboot.c
+++ b/arch/sparc/kernel/reboot.c
@@ -7,9 +7,9 @@
 #include <linux/export.h>
 #include <linux/pm.h>
 
-#include <asm/system.h>
 #include <asm/oplib.h>
 #include <asm/prom.h>
+#include <asm/setup.h>
 
 /* sysctl - toggle power-off restriction for serial console
  * systems in machine_power_off()