mm: writeback tweaks during screen on/off

Signed-off-by: zwliew <zhaoweiliew@gmail.com>
s3cfb: Decrease driver verbosity

Change-Id: I710be66c5209977494d0443cf5fdc7ac5922bee1
Signed-off-by: zwliew <zhaoweiliew@gmail.com>
Implementend Boeffla Sound v1.6.4

Change-Id: Ie2977fd59b2c2caf739d66d06307a8dcc63afd52
Signed-off-by: zwliew <zhaoweiliew@gmail.com>