This patch removes the assert that expects the SPMC PC
value to be same as BL32_BASE. This assumption is not
true for all platforms e.g. Tegra, and so will be removed
from the SPMD.

Platforms can always add this check to the platform files,
if required.

Change-Id: Ic40620b43d160feb4f72f4af18e6d01861d4bf37
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>