arm64: dts: qcom: sc7180: Avoid "phy" for USB QMP PHY wrapper

The bindings for the QMP PHY are truly strange.  I believe (?) that
they may have originated because with PCIe each lane is treated as a
different PHY and the same PHY driver is used for a whole bunch of
things (incluidng PCIe).

In any case, now that we have "make dtbs_check", we find that having
the outer node named "phy" triggers the
"schemas/phy/phy-provider.yaml" schema, yelling about:

  phy@88e9000: '#phy-cells' is a required property

Let's call the outer node the "phy-wrapper" and the inner node the
"phy" to make dtbs_check happy.
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Fixes: 0b766e7f ("arm64: dts: qcom: sc7180: Add USB related nodes")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20191212113540.6.Iec10b23bb000186b36b8bacfb6789d8233de04a7@changeidSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/sc7180.dtsi

@@ -992,7 +992,7 @@ usb_1_hsphy: phy@88e3000 {
 			nvmem-cells = <&qusb2p_hstx_trim>;
 		};
 
-		usb_1_qmpphy: phy@88e9000 {
+		usb_1_qmpphy: phy-wrapper@88e9000 {
 			compatible = "qcom,sc7180-qmp-usb3-phy";
 			reg = <0 0x088e9000 0 0x18c>,
 			      <0 0x088e8000 0 0x38>;
@@ -1013,7 +1013,7 @@ usb_1_qmpphy: phy@88e9000 {
 				 <&gcc GCC_USB3_PHY_PRIM_BCR>;
 			reset-names = "phy", "common";
 
-			usb_1_ssphy: lanes@88e9200 {
+			usb_1_ssphy: phy@88e9200 {
 				reg = <0 0x088e9200 0 0x128>,
 				      <0 0x088e9400 0 0x200>,
 				      <0 0x088e9c00 0 0x218>,