Bluetooth 5.0 controller support

[zephyrbot]

Reported by Luiz Augusto von Dentz:

Several new features are introduced in the Bluetooth Core Specification 5.0
Release. The major areas of improvement are:

• Slot Availability Mask (SAM)
• 2 Msym/s PHY for LE
• LE Long Range
• High Duty Cycle Non-Connectable Advertising
• LE Advertising Extensions
• LE Channel Selection Algorithm #2

• 2M Phy for LE and LE Long Range #3527: 2M Phy for LE and LE Long Range
• Bluetooth: controller: LE Advertising Extensions #3514: LE Advertising Extensions
• High Duty Cycle Non-Connectable Advertising #3475: High Duty Cycle Non-Connectable Advertising
• Channel Selection Algorithm #2 #3474: Channel Selection Algorithm This is a test commit #2

(Imported from Jira ZEP-1425)

[zephyrbot]

by Mark Linkmeyer:

Anas Nashif , this epic which is planned for 1.7 has no stories associated with it. Can you associate the appropriate stories? Or, if there are no stories to associate for 1.7, please remove the V1.7.0 setting from the FixVersion field of this epic. Thx.