fix mount error crash

Change-Id: I7a6e7fcb043d7e4171eeadad3a0161971a6b7a76
add prebuilt bluetooth tty module

Change-Id: Id80facf934651137658235d5259e8b2d7aa85f18
add prebuilt wifi modules

Change-Id: I1ff561af6e95f925570a257267ab482e1bdddd24