Simple upgrade with few generic kernel features enabled
 * IWD support
 * F2FS
 * NTFS3_FS
 * USB mass storage support
 * disable MTD and build more things as modules to reduce
   kernel size to compensate some new built-in options,
   as kernel doesn't boot otherwise.

No new things for pmOS's devices (yet). Should work same as before.

[ci:skip-build] Already built on CI in MR