Feature request: Increasing advertise data size on

non-connectable adv.
When the advertisement is non-connectable, give back the
bytes to the advertiser where the adv flags would have been.
This increases the non-connectable advertisement's advertise
data from 24 to 27 bytes.

Bug:18359570
Change-Id: Ia3cc48dca50cc3c51095ee92a489f143f6d350b1