msm: ipa3: IPA clock vote ioctl

The ability to vote IPA clock from user space is now required. Given
this, voting for IPA clock can now be done via an ioctl. These changes
implement the ioctl.

Change-Id: Id7e02678e96da98f2a17f35e7f6736fba39ca990
CRs-Fixed: 2592003
Signed-off-by: Perry Randise <prandise@codeaurora.org>