drm/amd/display: Update dcn10_init_hw for FPGA

Update dcn10_init_hw such that initialization of relevant
HW blocks for Maximus FPGA are also initialized (and not skipped).

Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>