clk: qcom: clk-alpha-pll: Add support for Regera print registers

Regera PLL print registers are required to get the PLL values
from the debugfs, thus add support for the same.

Change-Id: Ib0064c6764c353987e17c1acdab5bb8afbbad73f
Signed-off-by: Taniya Das <tdas@codeaurora.org>