defconfig: sa8155: Enable config for dyn splash

Enable CONFIG_DRM_SDE_SHP,CONFIG_DRM_MSM_LEASE for supporting
dynamic splash feature.

Change-Id: Ia24a701b0bc0863cfb7bd872c2528839b1d0b15e
Acked-by: Poojashree Masthi <c_pmasth@qti.qualcomm.com>
Signed-off-by: Rahul Sharma <rahsha@codeaurora.org>