clk: qcom: Add handoff support for smd-rpm and voter rpm clocks

Some smd-rpm and voter rpm clocks are critical for system booting
and should not be gated until a unused clock tree late_init level.
So add support for handoff functionality for system critical rpm
clocks by using CLK_ENABLE_HAND_OFF flag.

Change-Id: I9f9674a25fc5f7a2bc9b5672b00716b82223b06b
Signed-off-by: Amit Nischal <anischal@codeaurora.org>