dts: binding: rename pinmux to gpr

rename pinmux to gpr
different from pinmux and io settings gpr will do more IO
settings.

Signed-off-by: Hake Huang <[email protected]>

Author: hakehuang

dts/bindings/pinctrl/nxp,imx-pinmux.yaml renamed to dts/bindings/pinctrl/nxp,imx-gpr.yaml

@@ -3,7 +3,7 @@
 
 description: i.MX IOMUXC node
 
-compatible: "nxp,imx-pinmux"
+compatible: "nxp,imx-gpr"
 
 include: base.yaml