ath10k: Use of_device_get_match_data() helper

Only the device data is needed, not the entire struct of_device_id.
Use of_device_get_match_data() instead of of_match_device().

Signed-off-by: Meng Tang <tangmeng@uniontech.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220318025331.23030-1-tangmeng@uniontech.com