ARM: dts: msm: enable MDP macrotile format support for msm8994

Macrotile is a custom format to increase system memory access
efficiency. Enabling support for this format in display controller.

Change-Id: I82c3344c7cd947e9ed1b7a21d5ab3cc1b8da1786
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>