net: prestera: acl: fix code formatting

Make the code look better.

Signed-off-by: Maksym Glubokiy <maksym.glubokiy@plvision.eu>
Link: https://lore.kernel.org/r/20220715103806.7108-1-maksym.glubokiy@plvision.eu


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