ARM: rmobile: Enable PHY framework on Gen3

Enable PHY framework on Gen3, this is required for USB EHCI PHY support.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/arch/arm/mach-rmobile/Kconfig b/arch/arm/mach-rmobile/Kconfig
index fc4b3c3..ac08d6e 100644
--- a/arch/arm/mach-rmobile/Kconfig
+++ b/arch/arm/mach-rmobile/Kconfig
@@ -11,6 +11,7 @@
 config RCAR_GEN3
 	bool "Renesas ARM SoCs R-Car Gen3 (64bit)"
 	select ARM64
+	select PHY
 
 endchoice