video: tegra: host: QoS triggers postscale

video: tegra: host: QoS triggers postscale

For some devices we use QoS to define the minimum required frequency.
As this mechanism bypasses totally devfreq and the usual device profile,
we need to trigger postscale callback also in these cases to ensure that
i.e. EMC is scaled correctly at the same time.

Bug 1441874

Change-Id: I33545101157b015db240bfe9bb8a5c404469803c
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/362487
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>