linux-imx

arm64: dts: imx8mm: add clock for GPIO node

i.MX8MM has clock gate for each GPIO bank, add clock info
to GPIO node for clock management.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>