Add tegra-fsicom driver. It provides interface to communicate with Functional Safety Island (FSI). Bug 3583609 Change-Id: I0cc45de69ca73092e13ee17fec4abd3f9c9e0468 Signed-off-by: Rahul Bedarkar <rabedarkar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2707054 Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> GVS: Gerrit_Virtual_Submit