zephyr/doc/guides/porting/board
David B. Kinder 551251ace9 doc: replace with valid png images
PR #18789 missed one png that pngcheck was unhappy with

Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
2019-09-02 13:01:14 +02:00
..
hierarchy.png