phy: rcar-gen3-usb2: select USB_COMMON

When USB is disabled, we get a link error for this driver
because of the added OTG support

drivers/phy/renesas/phy-rcar-gen3-usb2.o: In function `rcar_gen3_phy_usb2_probe':
phy-rcar-gen3-usb2.c:(.text+0x250): undefined reference to `of_usb_get_dr_mode_by_phy'

Other phy drivers select USB_COMMON for this, so let's do the same

Fixes: 7e0540f41332 ("phy: rcar-gen3-usb2: check dr_mode for otg mode")
Signed-off-by: Arnd Bergmann <>
Acked-by: Yoshihiro Shimoda <>
Signed-off-by: Kishon Vijay Abraham I <>
diff --git a/drivers/phy/renesas/Kconfig b/drivers/phy/renesas/Kconfig
index cb09245..c845fac 100644
--- a/drivers/phy/renesas/Kconfig
+++ b/drivers/phy/renesas/Kconfig
@@ -12,7 +12,9 @@
 	tristate "Renesas R-Car generation 3 USB 2.0 PHY driver"
 	depends on ARCH_RENESAS
 	depends on EXTCON
+	depends on USB_SUPPORT
 	select GENERIC_PHY
+	select USB_COMMON
 	  Support for USB 2.0 PHY found on Renesas R-Car generation 3 SoCs.