rtl8xxxu: Determine the need for SGI before handling specific TX desc formats

In order to be able to split out the TX descriptor handling code,
determine in advance the need to mark SGI.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
1 file changed