ARM: dts: msm: Add mdss pll driver resources for MSM8974

Mdss pll driver handles the resources for output interfaces
such as eDP, HDMI and DSI through dts configuration. These
resource management includes the power supply entries, clocks,
IO register range and other pll specific entires. This change
defines the resources for MSM8974 target.

Change-Id: I4ee424bfc1d4cf90ad87f7735e019f95fb6de897
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>