scsi: ufs: relocating power change routine

According to JDEC220 the link-startup command and sending a NOP query
should be one after the other.
This is why calling the power change routine should be relocated.

Change-Id: I756fff9a430f11dd9806dee442dbd0a5d7820b37
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>