[PATCH] I2C: missing new lines in i2c-core messages

Two log messages lack their trailing new line in i2c-core. I'd swear I had
fixed them already, but it seems not. Bonus: improved coding style.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>