phy: qualcomm: usb: Fix SuperSpeed PHY OF dependency

This Kconfig entry should declare a dependency on OF

Fixes: 6076967a ("phy: qualcomm: usb: Add SuperSpeed PHY driver")
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lkml.org/lkml/2020/11/13/414Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Link: https://lore.kernel.org/r/20201113151225.1657600-2-bryan.odonoghue@linaro.orgSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/qualcomm/Kconfig

@@ -98,7 +98,7 @@ config PHY_QCOM_USB_HS_28NM
 
 config PHY_QCOM_USB_SS
 	tristate "Qualcomm USB Super-Speed PHY driver"
-	depends on ARCH_QCOM || COMPILE_TEST
+	depends on OF && (ARCH_QCOM || COMPILE_TEST)
 	depends on EXTCON || !EXTCON # if EXTCON=m, this cannot be built-in
 	select GENERIC_PHY
 	help