usb: phy: msm: Make of_device_id array const

Make of_device_id array const, because all OF functions handle
it as const.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/phy/phy-msm-usb.c

@@ -1427,7 +1427,7 @@ static void msm_otg_debugfs_cleanup(void)
 	debugfs_remove(msm_otg_dbg_root);
 }
 
-static struct of_device_id msm_otg_dt_match[] = {
+static const struct of_device_id msm_otg_dt_match[] = {
 	{
 		.compatible = "qcom,usb-otg-ci",
 		.data = (void *) CI_45NM_INTEGRATED_PHY