msm: clock-mdss-8974: Set min/max div for fixed divider clocks

Fixed dividers in mdss might not be handed off successfully during
init. Add in min/max_div field to make sure clk_round_rate will
still work correctly even if handoff fails.

Change-Id: Ia8ed3ebf446858d4f917d04b97686e582cc1ec6a
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>