staging: wilc1000: host_interface.c: replace PRINT_ER with netdev_err

This patch replaces PRINT_ER with netdev_err.

Signed-off-by: Chris Park <chris.park@atmel.com>
Signed-off-by: Leo Kim <leo.kim@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>