configure: fix mmal build dependencies

The mmal decoders do not depend on the software decoders.
Signed-off-by: Anton Khirnov <anton@khirnov.net>

configure

@@ -2107,9 +2107,8 @@ h264_d3d11va_hwaccel_select="h264_decoder"
 h264_dxva2_hwaccel_deps="dxva2"
 h264_dxva2_hwaccel_select="h264_decoder"
 h264_mmal_decoder_deps="mmal"
+h264_mmal_decoder_select="mmal"
 h264_mmal_hwaccel_deps="mmal"
-h264_mmal_decoder_select="h264_decoder"
-h264_mmal_encoder_deps="mmal"
 h264_omx_encoder_deps="omx"
 h264_qsv_hwaccel_deps="libmfx"
 h264_vaapi_hwaccel_deps="vaapi"
@@ -2134,8 +2133,8 @@ mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
 mpeg2_dxva2_hwaccel_deps="dxva2"
 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
 mpeg2_mmal_decoder_deps="mmal"
+mpeg2_mmal_decoder_select="mmal"
 mpeg2_mmal_hwaccel_deps="mmal"
-mpeg2_mmal_decoder_select="mpeg2video_decoder"
 mpeg2_qsv_hwaccel_deps="libmfx"
 mpeg2_vaapi_hwaccel_deps="vaapi"
 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
@@ -2150,13 +2149,13 @@ vc1_d3d11va_hwaccel_deps="d3d11va"
 vc1_d3d11va_hwaccel_select="vc1_decoder"
 vc1_dxva2_hwaccel_deps="dxva2"
 vc1_dxva2_hwaccel_select="vc1_decoder"
+vc1_mmal_decoder_deps="mmal"
+vc1_mmal_decoder_select="mmal"
+vc1_mmal_hwaccel_deps="mmal"
 vc1_vaapi_hwaccel_deps="vaapi"
 vc1_vaapi_hwaccel_select="vc1_decoder"
 vc1_vdpau_hwaccel_deps="vdpau"
 vc1_vdpau_hwaccel_select="vc1_decoder"
-vc1_mmal_decoder_deps="mmal"
-vc1_mmal_hwaccel_deps="mmal"
-vc1_mmal_decoder_select="vc1_decoder"
 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"