Revert "tuna_ak_defconfig: Default Governor HYPER"

This reverts commit 15566237db1a74df5fc385b5853c984665ca0c80.
tuna_ak_defconfig: Enable Default WESTWOOD
Kernel Version: AK.104
mtd: Disable mtdchar mmap on MMU systems

commit f5cf8f07423b2677cebebcebc863af77223a4972 upstream.

This code was broken because it assumed that all MTD devices were map-based.
Disable it for now, until it can be fixed properly for the next merge window.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
OMAPDSS: DISPC: Pipe threshold sizes power optimization.

This patch changes the calculation of thresholds and sets low
threshold to half of buffer size for OMAP4. The memory will
able to sleep between transactions to dss because dss will
read by big chunks.

boype: Also removed dispc_calculate_threshold function, as it is no longer used.

Backport from TI omapzoom kernel 3.4 repo, based upon:
http://git.omapzoom.org/?p=kernel/omap.git;a=commit;h=cd99eb345e1ad26ffbc665f46ea917dad762937b
mm/page_alloc.c: min_free_kbytes to 8192
The UI got laggy after approx. one day on-time with moderate use - let's see if this is making things better.

Conflicts:
	mm/page_alloc.c
Kernel Version: AK.105