arm64: defconfig: Enable TI TSCADC driver

Enable TSCADC driver to be built as a module which will
add support for TI's TSC/ADC MFDevice.
Signed-off-by: Bhavya Kapoor <b-kapoor@ti.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm64/configs/defconfig

@@ -691,6 +691,7 @@ CONFIG_MFD_RK808=y
 CONFIG_MFD_SEC_CORE=y
 CONFIG_MFD_SL28CPLD=y
 CONFIG_MFD_TPS65219=y
+CONFIG_MFD_TI_AM335X_TSCADC=m
 CONFIG_MFD_ROHM_BD718XX=y
 CONFIG_MFD_WCD934X=m
 CONFIG_REGULATOR_FIXED_VOLTAGE=y