Rename ngpio to ngpios to fix below CHECK_DTBS warnings:
arch/arm/boot/dts/nxp/imx/imx6dl-ts4900.dtb: gpio@28 (technologic,ts4900-gpio): 'ngpio' does not match any of the regexes: '^(hog-[0-9]+|.+-hog(-[0-9]+)?)$', '^pinctrl-[0-9]+$'
from schema $id: http://devicetree.org/schemas/trivial-gpio.yaml
Signed-off-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>