ARM: multi_v7_defconfig: enable the Meson PWM controller

This enables the Amlogic Meson PWM controller. It is used for a dimmable
LED on some devices. Additionally some devices use it to generate the
32.768 kHz (low power oscillator) clock.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm/configs/multi_v7_defconfig

@@ -948,6 +948,7 @@ CONFIG_PWM_ATMEL=m
 CONFIG_PWM_ATMEL_HLCDC_PWM=m
 CONFIG_PWM_ATMEL_TCB=m
 CONFIG_PWM_FSL_FTM=m
+CONFIG_PWM_MESON=m
 CONFIG_PWM_RCAR=m
 CONFIG_PWM_RENESAS_TPU=y
 CONFIG_PWM_ROCKCHIP=m