Revert "mcde: merged samsung underflow patch but disabled it"

This reverts commit 79ea893d82f3aa7cc95291fa90ed3384087cb2a3.
block/sio-iosched: restore default params
defconfig: switch preempt RCU
audio: Fix for choppy playback in Ubuntu pulse audio

Signed-off-by: ramesh.chandrasekaran <ramesh.chandrasekaran@stericsson.com>
Signed-off-by: cocafe <cocafehj@gmail.com>
s6e63m0: add description in sysfs interface
fs/ext4: driver updates
bcmdhd: add PM_FAST control param

The previous one doesn't work properly, this one works.

Signed-off-by: cocafe <cocafehj@gmail.com>
abb-links: print out bank and reg info
Signed-off-by: cocafe <cocafehj@gmail.com>