linux: fix using tables >= 256
linux: fix using tables >= 256

Mirror what iproute2 does.

An exception is made for Android: RTA_TABLE is not available in the
current required Android version and we don't want to bump it.

Signed-off-by: Ferry Huberts <66e11f9f5d965b69497c7e73d5e808f8b13c1218@pelagic.nl>

cholin/olsrd,diogomg/olsrd-binary-heap,cholin/olsrd,sebkur/olsrd,sebkur/olsrd,diogomg/olsrd,sebkur/olsrd,diogomg/olsrd,diogomg/olsrd-binary-heap,diogomg/olsrd-binary-heap,cholin/olsrd,diogomg/olsrd-binary-heap,diogomg/olsrd,diogomg/olsrd-binary-heap,diogomg/olsrd-binary-heap,diogomg/olsrd,sebkur/olsrd,sebkur/olsrd,diogomg/olsrd,diogomg/olsrd,cholin/olsrd,diogomg/olsrd,sebkur/olsrd,diogomg/olsrd-binary-heap,cholin/olsrd