scsi: ufs: set the hibern8 on idle state at missing places

Hibern8 on idle state should be set to HIBERN8_EXITED during
initialization and also during resume if the link is reinitialized but
its missing as of now, this change takes care of it.

Change-Id: I9f3b25df3904a666f0efe9bc23f75c0c4116e960
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>