ARM: dts: msm: support GPU max freq @700Mhz only for v2

GPU max frequency is different for v1 and v2 hardware. Move V2
specific frequency configuration to v2 dtsi.

Change-Id: Ice95efcbf2b074a1cca3782e894bffd134f6f137
Signed-off-by: Thomas (Wonyoung) Yun <wyun@codeaurora.org>