dt-bindings: phy-qcom-qmp: Tweak qcom,msm8998-qmp-ufs-phy

Fixup MSM8998 UFS binding now that Evan's reset series has landed.
https://lore.kernel.org/lkml/20190321171800.104681-1-evgreen@chromium.org/Signed-off-by: Marc Gonzalez <marc.w.gonzalez@free.fr>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt

@@ -73,7 +73,8 @@ Required properties:
 			"phy", "common".
 		For "qcom,msm8998-qmp-usb3-phy" must contain
 			"phy", "common".
-		For "qcom,msm8998-qmp-ufs-phy": no resets are listed.
+		For "qcom,msm8998-qmp-ufs-phy": must contain:
+			"ufsphy".
 		For "qcom,msm8998-qmp-pcie-phy" must contain:
 			"phy", "common".
 		For "qcom,sdm845-qmp-usb3-phy" must contain: