feat(arm): mock support for CCA NV ctr

Arm reference design FVP platforms such as RD-Fremont do not implement
the CCA_FW_NVCOUNTER. Update firmware such that the implementation will
return TRUSTED_FW_NVCOUNTER when the caller requests the CCA NV counter.
This allows the platforms to use the CCA CoT on FVP platforms.

Signed-off-by: Pranav Madhu <pranav.madhu@arm.com>
Signed-off-by: Vivek Gautam <vivek.gautam@arm.com>
Change-Id: Ifab724fae63857056b3eeb44eeefc15c4c610eed
1 file changed