Tegra210: resume PMC hardware block for all platforms

Tegra210: resume PMC hardware block for all platforms

The PMC hardware block resume handler was called for Tegra210
platforms, only if the sc7entry-fw was present on the device.
This would cause problems for devices that do not support this
firmware.

This patch fixes this logic and resumes the PMC block even if
the sc7entry-fw is not present on the device.

Change-Id: I6f0eb7878126f624ea98392f583ed45a231d27db
Signed-off-by: Kalyani Chidambaram <kalyanic@nvidia.com>