drm/amd/display: update GSP1 generic info packet for PSRSU

Base on PSRSU specification, every seletive update frame need to use two
SDP to indicate the frame active range. So we occupy another GSP1 for
PSRSU execution.

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Po-Ting Chen <robin.chen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>