ARM: dts: msm: move default display for SM8150 CDP and MTP to overlay

Move default display for sm8150 MTP and CDP to their respective
overlay files.

Change-Id: Iddd79d1e8a0cbdd4253f062cb1b3fe66d5d1e445
Signed-off-by: Shashank Babu Chinta Venkata <sbchin@codeaurora.org>