USB: remove use of err() in drivers/usb/serial

err() is going away, so switch to dev_err() or printk() if it's really
needed.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --cc drivers/usb/serial/aircable.c
Simple merge

diff --cc drivers/usb/serial/belkin_sa.c
Simple merge

diff --cc drivers/usb/serial/cyberjack.c
Simple merge

diff --cc drivers/usb/serial/cypress_m8.c
Simple merge

diff --cc drivers/usb/serial/digi_acceleport.c
Simple merge

diff --cc drivers/usb/serial/empeg.c
Simple merge

diff --cc drivers/usb/serial/ezusb.c
Simple merge

diff --cc drivers/usb/serial/ftdi_sio.c
Simple merge

diff --cc drivers/usb/serial/io_edgeport.c
Simple merge

diff --cc drivers/usb/serial/ipaq.c
Simple merge

diff --cc drivers/usb/serial/keyspan_pda.c
Simple merge

diff --cc drivers/usb/serial/kl5kusb105.c
Simple merge

diff --cc drivers/usb/serial/mct_u232.c
Simple merge

diff --cc drivers/usb/serial/mos7720.c
Simple merge

diff --cc drivers/usb/serial/mos7840.c
Simple merge

diff --cc drivers/usb/serial/omninet.c
Simple merge

diff --cc drivers/usb/serial/safe_serial.c
Simple merge

diff --cc drivers/usb/serial/spcp8x5.c
Simple merge

diff --cc drivers/usb/serial/usb-serial.c
Simple merge

diff --cc drivers/usb/serial/visor.c
Simple merge

diff --cc drivers/usb/serial/whiteheat.c
Simple merge