dt-bindings: pinctrl: xilinx: Rename *gpio to *gpio-grp

Anything ending with gpio/gpios is taken as gpio phande/description which
is reported as the issue coming from gpio-consumer.yaml schema.
That's why rename the gpio suffix to gpio-grp to avoid name collision.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/2e3a1f1f57cf929bd05115bc081e6d01d5a53443.1702996859.git.michal.simek@amd.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.yaml

@@ -39,7 +39,7 @@ properties:
       phandle to the SLCR.
 
 patternProperties:
-  '^(.*-)?(default|gpio)$':
+  '^(.*-)?(default|gpio-grp)$':
     type: object
     patternProperties:
       '^mux':

Documentation/devicetree/bindings/pinctrl/xlnx,zynqmp-pinctrl.yaml

@@ -31,7 +31,7 @@ properties:
     const: xlnx,zynqmp-pinctrl
 
 patternProperties:
-  '^(.*-)?(default|gpio)$':
+  '^(.*-)?(default|gpio-grp)$':
     type: object
     patternProperties:
       '^mux':