Add support for specifying multiple image files in
BR2_TARGET_BAREBOX_IMAGE_FILE config option.
This is useful for boards with several RAM size variants.
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
[Thomas: rename internal variable from $(1)_IMAGE_FILE to
$(1)_IMAGE_FILES.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>