V4L/DVB (3796): Add several debug messages to cx24123 code
Current debug messages at cx24123 are next to useless, since they don't print the values sent/read to registers. With this patch, debug=1 will show comprehensive messages. debug=2 will show also read/write operations at I2C bus. Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: NAndrew de Quincey <adq_dvb@lidskialf.net>
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