wcn36xx: Add helper macros to cast vif to private vif and vice versa

Makes the code a little easier to read.

Signed-off-by: Pontus Fuchs <pontus.fuchs@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
6 files changed