ARM: multi_v7_defconfig: Enable the Rockchip USB 2.0 phy

Most Rockchip SoCs have a DesignWare HS OTG USB 2.0 controller, enable
the driver for the Rockchip USB 2.0 PHY to make that functional.
Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/configs/multi_v7_defconfig

@@ -669,6 +669,7 @@ CONFIG_PHY_HIX5HD2_SATA=y
 CONFIG_PWM_STI=m
 CONFIG_OMAP_USB2=y
 CONFIG_TI_PIPE3=y
+CONFIG_PHY_ROCKCHIP_USB=m
 CONFIG_PHY_QCOM_APQ8064_SATA=m
 CONFIG_PHY_MIPHY28LP=y
 CONFIG_PHY_MIPHY365X=y