dt-bindings: phy: uniphier-usb3hs: Fix incorrect clock-names and reset-names

There is no clock-names and reset-names for Pro5 SoC, that should have two
properties, "gio" and "link" like usb3-ssphy.

And according to the existing PXs2 devicetree, the clock-names for PXs2 SoC
should have "link" and "phy", and minItems of clocks should be 2.

Fixes: 134ab284

 ("dt-bindings: phy: Convert UniPhier USB3-PHY conroller to json-schema")
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/1648637715-19262-5-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>