[Add kernel in UBI feature]

[Description]
Add kernel in UBI feature
1. create factory and sysupgrade image align to openwrt
2. align openwrt image framework: kernel in UBI and rootfs is squashfs format
3. remove the partition patch for dts
4. enable CONFIG_XZ_DEC_ARM in kernel to fix squashfs xz decompression
fail issue

[Release-log]

5 files changed
tree: 85cddc23c7effd0a52a61ff3ee693b9a5974bf3a
  1. classes/
  2. conf/
  3. recipes-connectivity/
  4. recipes-devtools/
  5. recipes-kernel/