phy: rcar: Add R-Car Gen2 PHY driver

Add a PHY driver for the R-Car Gen2 which allows configuring the mux
connected to the EHCI controllers and USBHS controller.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index ba0803c..178fb45 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -12,5 +12,6 @@
 obj-$(CONFIG_PHY_SANDBOX) += sandbox-phy.o
 obj-$(CONFIG_$(SPL_)PIPE3_PHY) += ti-pipe3-phy.o
 obj-$(CONFIG_STI_USB_PHY) += sti_usb_phy.o
+obj-$(CONFIG_PHY_RCAR_GEN2) += phy-rcar-gen2.o
 obj-$(CONFIG_PHY_STM32_USBPHYC) += phy-stm32-usbphyc.o
 obj-$(CONFIG_MESON_GXL_USB_PHY) += meson-gxl-usb2.o meson-gxl-usb3.o