x25: convert printks to pr_<level>

use pr_<level> instead of printk(LEVEL)

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc net/x25/af_x25.c
Simple merge

diff --cc net/x25/x25_dev.c
Simple merge

diff --cc net/x25/x25_facilities.c
Simple merge

diff --cc net/x25/x25_forward.c
Simple merge

diff --cc net/x25/x25_in.c
Simple merge

diff --cc net/x25/x25_link.c
Simple merge

diff --cc net/x25/x25_subr.c
Simple merge