tree 014353751acaf0b5c1e4313bb36583633aaf7795
parent ad37a2e6e4b257c44b557fe54f22085b994cbe64
author Gunnar Mills <gmills@us.ibm.com> 1520865397 -0500
committer Gunnar Mills <gmills@us.ibm.com> 1520865499 -0500

Change obmc-ubi-fs to distro feature

obmc-ubi-fs is moving to a distro feature, update the
ubi-code-update.md doc to reflect this.
https://gerrit.openbmc-project.xyz/#/c/9493

Change-Id: I8f3a3e9f9cf3ddb0846cb9f1b0a7877e9c4e50b9
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>