phy: socionext: Add UniPhier PCIe PHY driver

Add PCIe PHY driver support for Pro5, LD20 and PXs3 SoCs.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
diff --git a/drivers/Makefile b/drivers/Makefile
index 3510dab..4081289 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -96,6 +96,7 @@
 obj-y += phy/allwinner/
 obj-y += phy/marvell/
 obj-y += phy/rockchip/
+obj-y += phy/socionext/
 obj-y += rtc/
 obj-y += scsi/
 obj-y += sound/