ARM: dts: msm: Specify display refresh rates for Truly 1080p panel

Specify the minimum and maximum refresh rate for the Truly 1080p
video mode panel used in msm8953 CDP/MTP and msm8937 MTP. This
settings are added to achieve the dynamic fps functionality.

Change-Id: If65532478d4633f63d893644c31a4242cf00c993
Signed-off-by: Raghavendra Ambadas <rambad@codeaurora.org>