[PATCH] kernel-fit-image.bbclass: Do not include kernel property in DTBO config subnodes

[Marek Vasut <marek.vasut@mailbox.org>]

The OE 5.0 implementation of fitImage generation did not include the
kernel property in DTBO configuration node subnodes, while the current
OE 6.0 implementation does. The previous implementation was correct,
because kernel together with only a DTBO overlay can not form bootable
result. The kernel property should only be part of the configuration
subnode which includes both kernel and DTB. Fix this.

Fixes: 05d0c7342d76 ("kernel-fit-image.bbclass: add a new FIT image implementation")
Signed-off-by: Marek Vasut <marek.vasut@mailbox.org>
---
Cc: Adrian Freihofer <adrian.freihofer@siemens.com>
Cc: Richard Purdie <richard.purdie@linuxfoundation.org>
Cc: Yoann Congal <yoann.congal@smile.fr>
---
NOTE: This should ideally be added into OE 6.0 too
---
 meta/lib/oe/fitimage.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/meta/lib/oe/fitimage.py b/meta/lib/oe/fitimage.py
index 881d0eae0ab..d7e21171ab9 100644
--- a/meta/lib/oe/fitimage.py
+++ b/meta/lib/oe/fitimage.py
@@ -425,8 +425,13 @@ class ItsNodeRootKernel(ItsNode):
         opt_props = {}
         conf_desc = []
         sign_entries = []
+        include_kernel = 1
 
-        if self._kernel:
+        # DTBO configuration sections do not include kernel property
+        if dtb and os.path.splitext(dtb.name)[1] == ".dtbo":
+            include_kernel = 0
+
+        if self._kernel and include_kernel:
             conf_desc.append("Linux kernel")
             opt_props["kernel"] = self._kernel.name
             if self._sign_enable:
-- 
2.53.0