clk: qcom: Add support to proxy vote until clk controllers sync states

Clock consumers gets deferred due to their dependencies during device
boot/probes, and can not put essential vdd vote before clock late init
clk_disable_unused() un-votes them. This behavior breaks functionality of
keeping clocks/feature continuously enabled from boot to HLOS. Putting
proxy vdd votes will ensure that votes are hold till consumer sync states
and it gives chance to consumers act on necessary votes when it's ready.

Also clock controller can not rely on consumers to vote vdd votes during
boot/probe sequence in all paths of clk provided consumed APIs. Putting
proxy votes makes sure that clk driver can access it's provided register
access.

Change-Id: I79301ff354b3ab53cc7c05db5e1dc75223228de6
Signed-off-by: Vivek Aknurwar <viveka@codeaurora.org>