soc: qcom: Add support for Cx iPeak limit driver

Implement common driver to limit Cx ipeak based on
voting from various clients in multimedia.

Change-Id: Ie0a57e49f7a8ba8a4fa3aa7f50dd0947f8e9d11b
Signed-off-by: Rajesh Kemisetti <rajeshk@codeaurora.org>
Signed-off-by: Vikash Garodia <vgarodia@codeaurora.org>
Signed-off-by: Deepak Kumar <dkumar@codeaurora.org>