wifi: ath11k: Fix kernel-doc issues

Fix documentation issues reported by kernel-doc:
- Incorrect use of /** for non-kernel-doc comments
- Mismatch between documented and actual identifiers
- Incorrect identifier syntax

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220909151246.22961-1-quic_jjohnson@quicinc.com