clk: msm: Add support to configure calibration L value

For some PLLs, there could be need to configure the calibration
L value for auto calibration which PLL would use whenever it will
come out of reset. Add support for the same by writing into
USER_CTL_HI register.

Change-Id: I864d5086f4e77b38827c0286caa3f64b9a37a7a7
Signed-off-by: Amit Nischal <anischal@codeaurora.org>