* rk35xx: enable the CONFIG_F2FS_FS_COMPRESSION option
This allows to use compression on a F2FS partition to save space and
reduce I/O operations to media.
* all: enable the CONFIG_F2FS_FS_COMPRESSION option
* Enable Virtual qemu build targets
* Bugfix - saving build number is being overwritten before saved
* Remove stable builds, not needed
* Update kernel config, enable current instead of edge