msm: mdss: avoid skip pipe reconfiguration if pipe was freed

Current driver does not configure the pipe if the requested
data is same as the data already in the pipe.
This is a problem and can cause underruns in cases where
the pipe is freed due some error and driver tries to
setup previous configuration.
These changes make sure that if pipe was freed due some error,
driver will not skip the re-configuration of the pipe.

Change-Id: I36fc1644b4bdf413b308f7f7b5edcf97dcc8ec0b
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>