phy: Add support for the Apple Type-C PHY

This is merely a dummy driver that makes sure the DWC3 XHCI driver
finds its reset and PHY controllers.  We rely on iBoot to set up
the PHY for us.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 97c25b4..36ee1e9 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -998,6 +998,7 @@
 	select OF_BOARD_SETUP
 	select OF_CONTROL
 	select PCI
+	select PHY
 	select PINCTRL
 	select POSITION_INDEPENDENT
 	select POWER_DOMAIN