clk: msm: clock-gcc-8952: Set test-control values

Hardware team requires setting of PLL test control and
config control registers. Add these to the pll structure.

Change-Id: I1578a7828dc6e7a0fe2dae7af1417d3f9df8cc75
Signed-off-by: Arun KS <arunks@codeaurora.org>