linux-phytec-fsl

rtl8xxxu: TXDESC_SHORT_GI is txdesc32 only

This is no short GI bit in the txdesc40 format.

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