plat: imx8m: Add basic rdc module init driver

Add the basic support for RDC init/config driver,
this module driver can be enhanced more if necessary.

Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: I290dc378d0d85671435f9de46d5aa790b4e006c8
4 files changed