net: hns3: add \n at the end when print msg

To make the print message more clearly, add \n at the and of message if
it is missing currently.

Signed-off-by: Peiyang Wang <wangpeiyang1@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250623040043.857782-5-shaojijie@huawei.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>