ARM: multi_v7_defconfig: Enable LP872x regulator support

The LP872x regulator is used in the LG Optimus Black codename sniper to supply
the external mmc card.
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/configs/multi_v7_defconfig

@@ -467,6 +467,7 @@ CONFIG_REGULATOR_RK808=y
 CONFIG_REGULATOR_GPIO=y
 CONFIG_MFD_SYSCON=y
 CONFIG_POWER_RESET_SYSCON=y
+CONFIG_REGULATOR_LP872X=y
 CONFIG_REGULATOR_MAX14577=m
 CONFIG_REGULATOR_MAX8907=y
 CONFIG_REGULATOR_MAX8973=y