clk: msm: gcc: Add support for efuse based fmax for GPU clock for MSM8937

MSM8937 requires to support the GPU clock fmax @475Mhz at SUPER_TURBO
volatge level. Add support to read the efuse register and update the
list of supported frequencies and fmax tables accordingly.

CRs-Fixed: 983518
Change-Id: I092b8a04bcafa74316e2d65e08c3f304506cb503
Signed-off-by: Odelu Kukatla <okukatla@codeaurora.org>