Revert "disp: msm: sde: update splash resource allocation for dual display"

This reverts commit dbb1a3ee.
This change causes regression in populating cont splash data for RM.

Change-Id: If239eb921e022fcad54033ae3c7e9e4c3dc54736
Signed-off-by: Nilaan Gunabalachandran <ngunabal@codeaurora.org>