feat: Add /dev/quickstart to support synchronous communication between processes in user mode startup.

Add /dev/quickstart to support synchronous communication between processes in user mode startup.
Support ioctl cmd:
 QUICKSTART_LISTEN,QUICKSTART_STAGE1,QUICKSTART_STAGE2,QUICKSTART_STAGE3,QUICKSTART_UNREGISTER only for init process;
 QUICKSTART_NOTIFY for other app process.

Close #I3OHO5

Change-Id: If6a56123be93a5bc6b6d1069abda8d872b15fae1

Change-Id: I052d930d54e63179b17b77f02c107a015f3cfc3f

rename quickstart.c

closes #I3M1S8

Change-Id: Ic85586553389d56f5188dd58e4fb7ced16463dff