defconfig: trim some fat
random: entropy tweaks are all the rage nowadays

use non-blocking pool for all

http://lwn.net/Articles/489734/

Conflicts:

	drivers/char/random.c

Conflicts:
	drivers/char/random.c
random: prevent add_input from doing anything
random: remove warning
defconfig: shamu needs performance default to boot
ramdisk: support dual f2fs/ext4 mount for /cache only for now
lk.utils: build script and flashable zip stuff