feat(imx8mn): enable optee fdt overlay support

Enable optee fdt overlay support.

Signed-off-by: Silvano di Ninno <silvano.dininno@nxp.com>
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Change-Id: Ibea052d35bf746475b8618b3a879eea80875333c
2 files changed