dt-bindings: phy: Drop reset-gpios from marvell,mmp3-hsic-phy

This has been added in error -- the PHY block doesn't have a reset pin.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200925235828.228626-2-lkundrak@v3.skSigned-off-by: Vinod Koul <vkoul@kernel.org>

Documentation/devicetree/bindings/phy/marvell,mmp3-hsic-phy.yaml

@@ -18,27 +18,20 @@ properties:
     maxItems: 1
     description: base address of the device
 
-  reset-gpios:
-    maxItems: 1
-    description: GPIO connected to reset
-
   "#phy-cells":
     const: 0
 
 required:
   - compatible
   - reg
-  - reset-gpios
   - "#phy-cells"
 
 additionalProperties: false
 
 examples:
   - |
-    #include <dt-bindings/gpio/gpio.h>
     hsic-phy@f0001800 {
             compatible = "marvell,mmp3-hsic-phy";
             reg = <0xf0001800 0x40>;
-            reset-gpios = <&gpio 63 GPIO_ACTIVE_HIGH>;
             #phy-cells = <0>;
     };