[U-Boot] [PATCHv2 0/3] spl: Lightweight UBI and UBI fastmap support

[Ladislav Michl]

This is an update of Thomas's patchset:
https://patchwork.ozlabs.org/patch/367305/
https://patchwork.ozlabs.org/patch/367306/

Changes from previous version:
  - fixes ubi_calc_fm_size to include also sizeof(struct ubi_fm_sb)
  - dropped private copy of ubi-media.h
  - ubi-wrapper.h now contains only needed definitions from ubi.h
    and ubi-user.h
  - used return values from errno.h
  - added example implementation for igep00x0.