drivers: clk: qcom: Add support for the MSM8994 V2 CPU clock tree

The MSM8994 V2 CPU clock tree sports a new divider
configuration and also supports higher frequencies
compared to V1. Add the necessary clock structures
and code to support the new clock tree.

Change-Id: Ie424ac0621afea7a7994de51de80432c733322f6
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>