wifi: wcn36xx: add support for pronto-v3

Pronto v3 has a different DXE address than prior Pronto versions. This
patch changes the macro to return the correct register address based on
the pronto version.

Signed-off-by: Vladimir Lypak <vladimir.lypak@gmail.com>
Signed-off-by: Sireesh Kodali <sireeshkodali1@gmail.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20230311150647.22935-2-sireeshkodali1@gmail.com