Revert "soc: qcom: rpmh: Dirt can only make you dirtier, not cleaner"

This reverts commit 4f80cb2c.

This is a preparation change for merging android-5.4.54 into
msm-5.4 branch. Revert this change to continue using existing
driver that is already supporting same functionality being
added in this change.

Change-Id: I783632301c9923c766a35e0341b56469a8daed35
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>