usb: host: xhci: make sure to power up PHY

some boards won't work if the PHY isn't explicitly
powered up.

Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/host/xhci-omap.c b/drivers/usb/host/xhci-omap.c
index e667810..912b2bd 100644
--- a/drivers/usb/host/xhci-omap.c
+++ b/drivers/usb/host/xhci-omap.c
@@ -98,6 +98,7 @@
 {
 	int ret = 0;
 
+	usb_phy_power(1);
 	omap_enable_phy(omap);
 
 	ret = dwc3_core_init(omap->dwc3_reg);