nfp: add more white space to the instruction defines

We need to add longer OP_* defines, move the values away.
Purely whitespace commit.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>