Staging: vt6655: move channel mapping code from card.c to channel.c

Move functions managing the channel mapping to a new channel.c file, as done in
the staging VT6656 driver. The function names contained in card.c were prefixed
with CARD followed by the first letter of the return code, remove this and use
more coherent function names.

The following functions moved and were renamed:

ChannelValid			-> is_channel_valid
CARDbSetChannel			-> set_channel
CARDvInitChannelTable		-> init_channel_table
CARDbyGetChannelMapping 	-> get_channel_mapping
CARDvSetCountryInfo		-> set_country_info
CARDbySetSupportChannels 	-> set_support_channels
CARDbChannelGetList		-> channel_get_list
CARDvSetCountryIE		-> set_country_IE
CARDbGetChannelMapInfo		-> get_channel_map_info
CARDvSetChannelMapInfo		-> set_channel_map_info
CARDvClearChannelMapInfo	-> clear_channel_map_info
CARDbyAutoChannelSelect		-> auto_channel_select
CARDbyGetChannelNumber		-> get_channel_number

Signed-off-by: Charles Clément <caratorn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>