clk: qcom: clk-alpha-pll: Add support for configuring fabia PLL

Fabia PLL configuration also requires test_ctl and user_ctl
registers to be configured. Add support for the same.

Change-Id: I0a95eae27cb90739ab5c05cf24b91c7727d6dea5
Signed-off-by: Shefali Jain <shefjain@codeaurora.org>