random: entropy tweaks are all the rage nowadays

use nonblocking for all.  Read this web page:
http://lwn.net/Articles/489734/

Signed-off-by: Derek Cannata <thederekjay@gmail.com>
random: prevent add_input from doing anything

Signed-off-by: Derek Cannata <thederekjay@gmail.com>
f_fs: ffs_func_free: cleanup requests allocated by autoconfig

functionfs was leaking request objects created by autoconfig.

Bug: 8659094

Change-Id: I641326cb5cb26e0a2ffa082cd2be2c21c66c38e5
Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Benoit Goby <benoit@android.com>
Signed-off-by: Derek Cannata <thederekjay@gmail.com>