Prepare for better device categorization by moving everything to testing
subdir first.
[skip-ci]: chicken-egg problem: passing pmaports CI depends on pmbootstrap MR
depends on this MR
Related: postmarketos#16
* move msm-fb-refresher dependency to downstream kernel package,
it is useless on mainline
* disable msm-fb-refresher service when using libhybris
adaptation, it is only required for downstream kernel *without*
libhybris. It interferes with qcom kgsl-adreno driver badly
(causes screen flickering)
* set CPU governor to conservative on system startup (it lowers
CPU frequency in idle state from initial 2.4 Ghz to 300 MHz)
* add hybris_pulse subpackage that gets installed only when
device-samsung-klte-hybris AND pulseaudio are installed. It
pulls in pulseaudio-modules-droid-7.1-caf and alsa integration
* add system.img symlink to lxc-android installation. With this
you can have Android container successfully running already
at the first boot without need to do it manually. Halium
installation process puts your system.img to /data partition
by default, so follow their recommendation. We can use a
symlink to save some space on /system partition.
[ci:skip-build]: already built successfully in CI
