ARM: OMAP2+: AM33xx: Add SoC specific restart hook

Add restart hook so that DTS based AM33xx builds can restart
the platform.

Tested-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Jean-Sebastien A. Beaudry <jsabeaudry@handyem.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 947cafe..d1156cf 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -53,6 +53,7 @@
 # Restart code (OMAP4/5 currently in omap4-common.c)
 obj-$(CONFIG_SOC_OMAP2420)		+= omap2-restart.o
 obj-$(CONFIG_SOC_OMAP2430)		+= omap2-restart.o
+obj-$(CONFIG_SOC_AM33XX)		+= am33xx-restart.o
 obj-$(CONFIG_ARCH_OMAP3)		+= omap3-restart.o
 
 # Pin multiplexing