mhi: core: handle pm error state transition within fast suspend/resume

During fast suspend/resume, the power management states in MHI
can change to any error state. Allow for it by re-checking and
handling it such that pm states are not lost or over-written in
the process.

Change-Id: I264ae096d20b9752837624dc3a4b3ea6131ad9a6
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>