Several drivers set NETIF_F_GSO_SOFTWARE, but mangle fraglist GRO packets
in a way that they can't be properly segmented anymore.
In order to properly deal with this, remove fraglist GSO from
NETIF_F_GSO_SOFTWARE and switch to NETIF_F_GSO_SOFTWARE_ALL (which includes
fraglist GSO) in places where it's safe to add.
Signed-off-by: Felix Fietkau <nbd@nbd.name>