Wifi : Switch to 3.2.3.172 revision of pronto driver

Change-Id: Iaa54bb149d7626b69df6cfa8b65fea31f213a4b9
update build script
Update build script
Revert "Wifi : Switch to 3.2.3.172 revision of pronto driver"

This reverts commit 6b3866b2ac980146fa1a7a6dca4f4e2858e144b2.