arm64: dts: imx93: add gpio alises

gpio driver need these gpio alises to config the gpio base.

Reviewed-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>