Update the fields of pdev tx and tx firmware stats structure.
Missing fields resulted in wrong fw stats to be displayed as below.

root@OpenWrt:/# cat /sys/kernel/debug/ath11k/
		ipq8074\ hw2.0/mac0/fw_stats/pdev_stats | grep Illegal
Illegal rate phy errors   36839112

Note that this struct was missing its members from initial driver
support and this change doesn't introduce/modify the structure for
firmware changes.

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01734-QCAHKSWPL_SILICONZ-1 v2
Signed-off-by: Sriram R <srirrama@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210721212029.142388-2-jouni@codeaurora.org