Revert "FROMLIST: scsi: ufs-qcom: enter and exit hibern8 during clock scaling"

This reverts commit 8e57dcda.

Failed upstream commit.  Last attempt was over a year ago.  Asutosh
mentioned that they have no plans to continue with this in the near
future.

Suggested-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Change-Id: I6550947579c36e415271d1637e8bbc0ed6f11925