At the moment there are two images for Nucleo-64 STM32 family board
connectors (img/nucleo_xxxxxx_connectors.png).
The images have the same canvas size (800x619) but different file
size in bytes and different color coding.
The first one (192K, 8-bit colormap) is used for
* nucleo_f070rb
* nucleo_f091rc
* nucleo_f103rb
* nucleo_l053r8
* nucleo_l073rz
The second one (464K, 8-bit/color RGBA) is used for
* nucleo_f030r8
* nucleo_f302r8
* nucleo_f334r8
Applying simultaneous black/white threshold to the images and
comparing them with imagemagick tools shows that the images
have no significant difference. Therefore we can use
nucleo_l073rz_connectors.png for nucleo_f030r8, nucleo_f302r8
and nucleo_f334r8.
Please see https://github.com/zephyrproject-rtos/zephyr/pull/15926
for details.
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>