bluetooth: use corect struct member and number of protocols

The original file is picked from 2.6.29b but struct definition of
uart_state has changed from then to 3.10. use correct definition.
Use correct definition of max number of protocols.

Change-Id: Id24efdd6e69640cb8f2374363e30e4dc44cc507a
CRs-Fixed: 706864
Signed-off-by: Anantha Krishnan <ananthk@codeaurora.org>