AC_Avoidance will not stop if it thinks the vehicle is on or outside the polygon. Setting a minimum distance ensures the vehicle is always within the polygon.
Only SF40c uses these ignore areas for now at least.
It is safe to increase the eeprom locations for the 2nd proximity instance because we only define a single instance.
RC_Channel: To nullptr from NULL.
AC_Fence: To nullptr from NULL.
AC_Avoidance: To nullptr from NULL.
AC_PrecLand: To nullptr from NULL.
DataFlash: To nullptr from NULL.
SITL: To nullptr from NULL.
GCS_MAVLink: To nullptr from NULL.
DataFlash: To nullptr from NULL.
AP_Compass: To nullptr from NULL.
Global: To nullptr from NULL.
Global: To nullptr from NULL.