feat(rdfremont): update Root registers page offset for SMMUv3

SMMUv3 with RME on RD-Fremont platform variants supports Root and Realm
register pages. The page offset for Root and Realm register pages is a
platform configurable option. Update the Root registers page offset for
RD-Fremont platform variants.

Signed-off-by: Rohit Mathew <Rohit.Mathew@arm.com>
Signed-off-by: Vivek Gautam <vivek.gautam@arm.com>
Change-Id: Ib3df7d7b9e54219d49b4d77a1fc5846096f1c78c
1 file changed