Revert "nfp: update nfp_X logging definitions"

This reverts commit 9386ebcc ("nfp: update nfp_X logging definitions")

The reverted patch was intended to improve logging for the NFP driver by
including information such as the source code file and number in log
messages.

Unfortunately our experience is that this has not improved things as
we had hoped. The resulting logs are inconsistent with (most) other
kernel log messages. And rely on knowledge of the source code version
in order for the extra information to be useful.

Thus, revert the change.

We acknowledge that Jakub Kicinski <kuba@kernel.org> foresaw this problem.

Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>