modules: hal_nordic: nrfx: update API version to 3.2.0

Updated API version enables multi-instance GPIOTE driver.
Additionally obsolete symbol that was used to specify
API version in the past was removed.
Affected drivers have been adjusted and appropriate changes
in affected files have been made.

Signed-off-by: Jakub Zymelka <jakub.zymelka@nordicsemi.no>