drm/amdgpu: add system interrupt mask for jrbc

Add new mask for enabling system interrupt for jrbc.

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Acked-by: Leo Liu <leo.liu at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 file changed