Update MAINTAINERS and CREDITS with habanalabs info

The habanalabs driver was written from scratch from the very first days
of Habana and is maintained by Oded Gabbay.

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

CREDITS

@@ -1222,7 +1222,7 @@ S: Brazil
 
 N: Oded Gabbay
 E: oded.gabbay@gmail.com
-D: AMD KFD maintainer
+D: HabanaLabs and AMD KFD maintainer
 S: 12 Shraga Raphaeli
 S: Petah-Tikva, 4906418
 S: Israel