Merge tag 'v2021.04-rc5' into next

Prepare v2021.04-rc5

diff --cc .azure-pipelines.yml
Simple merge

diff --cc Makefile
Simple merge

diff --cc common/image-fit.c
Simple merge

diff --cc doc/develop/driver-model/migration.rst
Simple merge

diff --cc doc/usage/index.rst
index fb834349ca3d5fd1ca75879e5ddef64aacb46ce4,6c59bbadab4528767cfa50b1db6e8a9533aecc2a..5faf279f4310d2d2915ef55dc5693c49350a5351
--- 1/doc/usage/index.rst
--- 2/doc/usage/index.rst
+++ b/doc/usage/index.rst
@@@ -4,8 -4,8 +4,9 @@@ Use U-Boo
  .. toctree::
     :maxdepth: 1
  
+    dfu
     fdt_overlays
 +   fit
     netconsole
     partitions
  

diff --cc include/dm/test.h
Simple merge

diff --cc include/image.h
Simple merge