ARM: omap2plus_defconfig: Select MFD_TI_LMU

We have REGULATOR_LM363X selected but not MFD_TI_LMU and
REGULATOR_LM363X depends on MFD_TI_LMU.
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/configs/omap2plus_defconfig

@@ -295,6 +295,7 @@ CONFIG_OMAP_WATCHDOG=m
 CONFIG_TWL4030_WATCHDOG=m
 CONFIG_MFD_CPCAP=y
 CONFIG_MFD_TI_AM335X_TSCADC=m
+CONFIG_MFD_TI_LMU=m
 CONFIG_MFD_PALMAS=y
 CONFIG_MFD_TPS65217=y
 CONFIG_MFD_TI_LP873X=y