clk: qcom: clock-cpu-8939: Add support for new efuse

There are extra efuse bits added to support extra speed
bins. Add support to read this in cpu clock driver and
decide the corresponding speed version to the corresponding
speed bin.

CRs-Fixed: 780871
Change-Id: I6af0397d78f6668521f2ae418cb7e873296eae86
Signed-off-by: Hanumath Prasad <hpprasad@codeaurora.org>
Signed-off-by: Tirupathi Reddy <tirupath@codeaurora.org>