ARM: restart: remove argument to setup_mm_for_reboot()

setup_mm_for_reboot() doesn't make use of its argument, so remove it.

Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 941a98c..8841751 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -43,7 +43,7 @@
 /*
  * We don't need to do anything here for nommu machines.
  */
-void setup_mm_for_reboot(char mode)
+void setup_mm_for_reboot(void)
 {
 }