drm/amdkfd: flag per-sdma queue reset supported to user space

Similar to compute queue reset, flag SDMA queue reset capabilities to
user space for safe testing.

Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Harish Kasiviswanathan <harish.kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>