usb: msm_otg: Fix compliation error with CONFIG_PM

Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
diff --git a/drivers/usb/otg/msm_otg.c b/drivers/usb/otg/msm_otg.c
index 3a37c94..f5f1b51 100644
--- a/drivers/usb/otg/msm_otg.c
+++ b/drivers/usb/otg/msm_otg.c
@@ -204,6 +204,11 @@
 
 	return ret;
 }
+#else
+static int msm_hsusb_config_vddcx(int high)
+{
+	return 0;
+}
 #endif
 
 static int msm_hsusb_ldo_enable(struct msm_otg *motg, int on)