sniper: Power button reset support

This adds support for resetting the device on a long press on the power button.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-by: Tom Rini <trini@konsulko.com>

board/lge/sniper/sniper.c

@@ -95,6 +95,10 @@ int misc_init_r(void)
 	char reboot_mode[2] = { 0 };
 	u32 dieid[4] = { 0 };
 
+	/* Power button reset init */
+
+	twl4030_power_reset_init();
+
 	/* Reboot mode */
 
 	reboot_mode[0] = omap_reboot_mode();