clk: qcom: rpmh: Add support for RPMH clocks for LAGOON

Add the PMIC XO clocks supported on LAGOON and register them
with clock framework for clients to be able to use it.

Change-Id: I0a11571336035d781739db5d3f70f6b66163b042
Signed-off-by: Taniya Das <tdas@codeaurora.org>