ARM: omap2plus_defconfig: Enable support for RTC M41T80

The phyCORE-AM335x SoM has a RV4162 RTC populated which is supported
by the M41T80 driver. Enabled it so make the RTC support on the SoM
available.
Signed-off-by: NTeresa Remmet <t.remmet@phytec.de>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/configs/omap2plus_defconfig

@@ -414,6 +414,7 @@ CONFIG_LEDS_TRIGGER_GPIO=m
 CONFIG_LEDS_TRIGGER_DEFAULT_ON=m
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_DS1307=m
+CONFIG_RTC_DRV_M41T80=m
 CONFIG_RTC_DRV_TWL92330=y
 CONFIG_RTC_DRV_TWL4030=m
 CONFIG_RTC_DRV_PALMAS=m