nimble/ll: Deprecate BLE_LL_EXT_ADV_AUX_PTR_CNT
nimble/ll: Deprecate BLE_LL_EXT_ADV_AUX_PTR_CNT

This should be deprecated after scanner refactor.

apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble