PD#SWPL-2497
Problem:
on 32bit kernel, when user space call WAITFORVSYNC,
we cannot send other command to framebuffer.
Solution:
remove lock in fbioctl as fb compat_ioctl do.
Our driver have locks to protect internal resources.
Verify:
verified on franklin.
Change-Id: I1789c09a7ea459aed4b782748847687c7f974526
Signed-off-by: sky zhou <sky.zhou@amlogic.com>