Set IRK always

Set IRK always

[Model] COMMON
[BinType] AP
[Customer] OPEN

[Issue#] N/A
[Request] Convergence team
[Occurrence Version] N/A

[Problem] Android 6.x devices which don't support privacy 1.2 couldn't
 make LE connection to the device which doesn't distribute IRK when pairing.
[Cause & Measure] Android 6.x devices which don't support privacy 1.2
 use wrong address type when it tries to connect if remote device doesn't
 distributes IRK. This is Android 6.x device's bug but for compatibility
 Tizen need to distribute IRK even though Privacy feature is disabled.
[Checking Method] Pair BLE with A3 / A5 phones of Android version 6.x ->
 Disconnect -> Try connect BLE again

[Team] Basic connection
[Developer] Seungyoun Ju
[Solution company] Samsung
[Change Type] Specification change

Signed-off-by: Sudha Bheemanna <b.sudha@samsung.com>
Change-Id: Ic1cde4eb35c913fa497cff24b09212aca0937fb5