feat(mediatek): add APIs exposed to the static library

To decrease the static library's dependency on TF-A, add API wrappers
for mmap_add_dynamic_region and mmap_remove_dynamic_region.
mtk_bl31_map_to_sip_error is also added for translating mtk_bl31_status
codes to their corresponding MKT_SIP_E* error codes.

Change-Id: Ib4a3593ee8b481b076430d054c08f33cc3b2fa08
Signed-off-by: Yidi Lin <yidilin@chromium.org>
3 files changed