feat(s32g274a): enable MMU for BL31 stage

Enable the MMU and add two entries to map the BL31 code and data
regions. Additional mappings will be added dynamically, enhancing
flexibility and modularity during the porting process.

Change-Id: I333c34c58274a115f62f54730bba5b71165e3e36
Signed-off-by: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com>
1 file changed