ath10k: add tracing for rx descriptor

Upon the reception of frame, the descriptor status are reported
to user space by tracepoint. This is useful for collecting rx
statistics.

Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>