headers: explicitly define Reserved bits in DXVAHD_BLT_STATE structures

As defined in the documentation https://learn.microsoft.com/en-us/windows/win32/api/dxvahd/ns-dxvahd-dxvahd_blt_state_output_color_space_data

and https://learn.microsoft.com/en-us/windows/win32/api/dxvahd/ns-dxvahd-dxvahd_stream_state_input_color_space_data

Signed-off-by: LIU Hao <lh_mouse@126.com>
1 file changed