V4L/DVB: Staging: tm6000: Fix coding style issues

Fixed coding style issues founded by checkpatch.pl in files:
tm6000-alsa.c,tm6000-cards, tm6000-core.c, tm6000-dvb.c, tm6000-i2c.c,
tm6000-stds.c, tm6000-usb-isoc.h, tm6000.h

[mchehab@redhat.com: Fix some compilation breakages]
Signed-off-by: Timofey Trofimov <tumoxep@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>