nimble/gap: Allow adv data for connectable ext adv
nimble/gap: Allow adv data for connectable ext adv

This is allowed by spec, only legacy directed advertising cannot have
adv data included.

X-Original-Commit: d40b1364ea1e75bdea6b061f0b00c69cade704d4

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