update cm & prv aospal repo

Signed-off-by: cj360 <ayunker551@gmail.com>

Update default.xml

include kitkat-wip branches and rm nonexistent repos

and rm duplicate paths

correct remotes in hardware repos

correct repo in readme

rm extra "/" in remotes

Updated manifest & readme to relfect staging branch
Also added a lot of cm repos hardware & external,
changed a few repos to sdl repo & -staging branch.

Signed-off-by: cj360 <ayunker551@gmail.com>