Message logged by 'dev_xxx()' or 'pr_xxx()' should end with a '\n'.

Fixes: 541368b4 ("usb: phy: Add driver for the Ingenic JZ4770 USB transceiver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/20200411063811.6767-1-christophe.jaillet@wanadoo.frSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>