ARM: dts: msm: Enable dynamic splash on sa6155

Configure dtsi to show multi card for DRM. This would
enable early dynamic splash to use card2 and Android
userspace to use card1.

Change-Id: I90b874c6ea545a3fb1d6f8da256447724a40f8fb
Acked-by: Krishna Kishor Jha <kkishorj@qti.qualcomm.com>
Signed-off-by: Rahul Sharma <rahsha@codeaurora.org>