[cip-dev][isar-cip-core][PATCH] layer.conf: Move SOURCE_EPOCH to kas-cip.yml

[Quirin Gylstorff <Quirin.Gylstorff@siemens.com>]

From: Quirin Gylstorff <quirin.gylstorff@siemens.com>

This allows downstream layers to overwrite the SOURCE_DATE_EPOCH with
there own implementation.

Signed-off-by: Quirin Gylstorff <quirin.gylstorff@siemens.com>
---
Was there an reason for the 'Immediate variable expansion' `:=`?
In the shell the variable is expanded correctly.

 conf/layer.conf | 1 -
 kas-cip.yml     | 2 ++
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/conf/layer.conf b/conf/layer.conf
index 82b4084..6198e1b 100644
--- a/conf/layer.conf
+++ b/conf/layer.conf
@@ -25,4 +25,3 @@ LAYERDIR_cip-core[vardepvalue] = "isar-cip-core"
 
 IMAGE_CLASSES += "squashfs verity swupdate"
 
-SOURCE_DATE_EPOCH := "${@bb.process.run("git -C ${LAYERDIR_cip-core} log -1 --pretty=%ct | tr -d '\n'")[0]}"
diff --git a/kas-cip.yml b/kas-cip.yml
index d10161f..737cfa0 100644
--- a/kas-cip.yml
+++ b/kas-cip.yml
@@ -41,6 +41,8 @@ local_conf_header:
     USERS += "root"
     USER_root[password] = "root"
     USER_root[flags] = "clear-text-password"
+  source_epoch: |
+    SOURCE_DATE_EPOCH := "${@bb.process.run("git -C ${LAYERDIR_cip-core} log -1 --pretty=%ct | tr -d '\n'")[0]}"
 
 env:
   DISTRO_APT_PREMIRRORS: ""
-- 
2.43.0