lpass client handle variable stores latest lpass hw vote.
During PDR, core hw vote release proceed to call unvote
for stale handle since above variable is set to non-zero
as part of audio hm vote. Maintain separate handles for
respective lpass hw votes inorder to fix this.
Change-Id: I432ce38b253ce6d18a25f9845fa694912718c74f
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>