wifi: ath12k: correctly update bw for ofdma packets

wifi: ath12k: correctly update bw for ofdma packets

Currently, arsta->txrate.bw is filled from ath12k_mac_bw_to_mac80211_bw(bw)
during ath12k_update_per_peer_tx_stats(). But in tx_completion path bw
is filled differently if ppdu_type is ofdma for HE/EHT rates.

Hence, update arsta->txrate.bw correctly if packet is ofdma for HE
and EHT rate.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1

Signed-off-by: Sarika Sharma <quic_sarishar@quicinc.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250701105927.803342-5-quic_sarishar@quicinc.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>