ARM: omap2plus_defconfig: Enable ina2xx_adc as a loadable module

Some devices have ina2xx_adc on i2c for measuring power consumption
and can nowadays just read the output via IIO.
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/configs/omap2plus_defconfig

@@ -506,6 +506,7 @@ CONFIG_IIO_SW_DEVICE=m
 CONFIG_IIO_SW_TRIGGER=m
 CONFIG_IIO_ST_ACCEL_3AXIS=m
 CONFIG_CPCAP_ADC=m
+CONFIG_INA2XX_ADC=m
 CONFIG_TI_AM335X_ADC=m
 CONFIG_SENSORS_ISL29028=m
 CONFIG_BMP280=m