mplayer: not available on bfin

Fixes:
http://autobuild.buildroot.net/results/109/109b7c9b575c7362c4982a908a1e3695e7590ebd/

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
mplayer: remove sh2 support

Remove a leftover of the commit commit e543f5a10488b020bb4ccb03e6de0e455c64841a
(arch: remove sh2, sh3 and sh3eb support).

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
mplayer: add missing reverse dependencies for nios2 and sh2a

Propagate to comment and libplayer unsupported platforms bfin and sh2a.

Fixes:
http://autobuild.buildroot.net/results/5d8/5d80ade791319b6a66ac1c342f7b1d25c023f0af/

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Merge remote-tracking branch 'mirror/master'