msm: clock-generic: Initialize additional fixed divider parameters

The minimum and maximum divider values need to be initialized
for fixed divider clocks. Modify the corresponding macros to
do this.

Change-Id: I1babe675d092f8ed9a0e8984503c286708df1f24
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>