ath11k: fix 4addr multicast packet tx

In 4addr, AP wired backbone to STA wired backbone ping fails due to ARP
request not getting answered. Here 4addr ARP multicast packet is sent in
3addr, so that 4addr STA not honouring the 3addr ARP multicast packet.
Fix this issue by sending out multicast packet in 4addr format, firmware
expects peer meta flag instead of vdev meta flag in Tx descriptor.

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01641-QCAHKSWPL_SILICONZ-1

Signed-off-by: Karthikeyan Periyasamy <periyasa@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210720213147.90042-2-jouni@codeaurora.org