arm64: dts: imx8-apalis-v1.1: Remove invalid GPIO properties

arm64: dts: imx8-apalis-v1.1: Remove invalid GPIO properties

Per fsl-imx-gpio.yaml, 'pad-wakeup' and 'pad-wakeup-num' are not
valid properties/

Remove them to fix the following schema warning:

imx8qm-apalis-ixora-v1.1.dtb: gpio@5d0a0000: 'pad-wakeup', 'pad-wakeup-num' do not match any of the regexes: '^(hog-[0-9]+|.+-hog(-[0-9]+)?)$', 'pinctrl-[0-9]+'
	from schema $id: http://devicetree.org/schemas/gpio/fsl-imx-gpio.yaml#

Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>