[rdkb][common][bsp][Add mt7996 and mt7992 other sku support]

[Description]
Add mt7996 and mt7992 other sku support
1. mt7996 BE13500 bring up support
2. mt7992 BE5040 bring up support

[Release-log]

Change-Id: I47267a4fb8ac76a94aaa6c3c25452224089b8b1c
2 files changed