arm64: defconfig: Enable PWM_SUN4I

Allwinner PWM support need for ARM64 Allwinner SoC's
which used pwms, builds it as module.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

arch/arm64/configs/defconfig

@@ -648,6 +648,7 @@ CONFIG_PWM_MESON=m
 CONFIG_PWM_RCAR=m
 CONFIG_PWM_ROCKCHIP=y
 CONFIG_PWM_SAMSUNG=y
+CONFIG_PWM_SUN4I=m
 CONFIG_PWM_TEGRA=m
 CONFIG_RESET_TI_SCI=y
 CONFIG_PHY_XGENE=y