ARM: shmobile: Minor update for the Lager DT reference code

Update the Lager DT reference code to get rid of the redundant
irqchip header and also make lager_add_standard_devices() static.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

arch/arm/mach-shmobile/board-lager-reference.c

@@ -19,12 +19,11 @@
  */
 
 #include <linux/init.h>
-#include <linux/irqchip.h>
 #include <linux/of_platform.h>
 #include <mach/r8a7790.h>
 #include <asm/mach/arch.h>
 
-void __init lager_add_standard_devices(void)
+static void __init lager_add_standard_devices(void)
 {
 	/* clocks are setup late during boot in the case of DT */
 	r8a7790_clock_init();