eth: remove copies of the NAPI_POLL_WEIGHT define

[ Upstream commit 5f012b40

 ]

Defining local versions of NAPI_POLL_WEIGHT with the same
values in the drivers just makes refactoring harder.

Drop the special defines in a bunch of drivers where the
removal is relatively simple so grouping into one patch
does not impact reviewability.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Paul Durrant <paul@xen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 66cf7435

 ("xen-netback: use default TX queue size for vifs")
Signed-off-by: Sasha Levin <sashal@kernel.org>