[PATCH] baremetal-image.bbclass: Emulate image.bbclass to handle new classes scope

[Alejandro Enedino Hernandez Samaniego <alejandro@enedino.org>]

The new classes scope implemented on commit 7bd328f9d
made testimage.bbclass (and perhaps others) stop working
for baremetal-images, the expected way to run testimage
is no longer to use INHERIT but to use IMAGE_CLASSES
instead, however this functionality was not implemented in the
baremetal-image class until now.

Emulate image.bbclass allowing the baremetal-image class to
use IMAGE_CLASSES to fix this issue.

Set defaults for IMAGE_FEATURES to allow bitbake checks to
pass properly.

Signed-off-by: Alejandro Enedino Hernandez Samaniego <alejandro@enedino.org>
---
 meta/classes-recipe/baremetal-image.bbclass | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/meta/classes-recipe/baremetal-image.bbclass b/meta/classes-recipe/baremetal-image.bbclass
index 3a979f2ed1..d3377a92fa 100644
--- a/meta/classes-recipe/baremetal-image.bbclass
+++ b/meta/classes-recipe/baremetal-image.bbclass
@@ -15,6 +15,15 @@
 #
 # See meta-skeleton for a working example.
 
+## Emulate image.bbclass
+# Handle inherits of any of the image classes we need
+IMAGE_CLASSES ??= ""
+IMGCLASSES = " ${IMAGE_CLASSES}"
+inherit ${IMGCLASSES}
+# Set defaults to satisfy IMAGE_FEATURES check
+IMAGE_FEATURES ?= ""
+IMAGE_FEATURES[type] = "list"
+IMAGE_FEATURES[validitems] += ""
 
 # Toolchain should be baremetal or newlib based.
 # TCLIBC="baremetal" or TCLIBC="newlib"
-- 
2.25.1