meta-lg: revert android 4.4.4 support

We saw several problems with uprading the Android environment to a 4.4.4 based
environment. Mainly problems with the graphics subsystem where sync file descriptiors were
not closed by the userland and by that the kernel ran out of available file descriptors
after some time which leads to a purely instable system.

Until we've found the point where we are leaking those file descriptors we're reverting
all changes related to this:

Revert "meta-lg: conf: mako: explicitly require android-headers 4.4.3"
This reverts commit 9bd9e3762a9d371dfc44554a3781e46c8662785e.

Revert "meta-lg: mako: switch to android-headers instead of phablet-headers"
This reverts commit f579fb6434ef4a583dd41f469f2f240b594341bb.

Revert "meta-lg: android-system-image-mako: update to new version 20141112-76"
This reverts commit 5cdf6982d4a123c2e6f0dab478ea713d2b6db7c9.

Revert "meta-lg: linux-lg-mako: bump SRCREV"
This reverts commit bfed89d545ab728287c44ca27482c79734b13672.

Signed-off-by: Simon Busch <morphis@gravedo.de>