minimal-initrd: Use kmod's modprobe also for simple module loading

This pulls flatcar/bootengine#113 to fix a
kernel boot warning being printed for three modules that are loaded
explicitly.

Signed-off-by: Kai Lueke <kailuke@microsoft.com>

Author: pothos

changelog/bugfixes/2025-10-28-initrd-module-warning.md

@@ -0,0 +1 @@
+- Fixed a kernel boot warning when loading an explicit list of kernel modules in the minimal first-stage initrd ([Flatcar#1934](https://github.com/flatcar/Flatcar/issues/1934))

sdk_container/src/third_party/coreos-overlay/sys-kernel/bootengine/bootengine-9999.ebuild

@@ -7,7 +7,7 @@ EGIT_REPO_URI="https://github.com/flatcar/bootengine.git"
 if [[ "${PV}" == 9999 ]]; then
 	KEYWORDS="~amd64 ~arm ~arm64 ~x86"
 else
-	EGIT_COMMIT="45d64bd450be710983b192d8ed795f5376c5f33f" # flatcar-master
+	EGIT_COMMIT="66edf6fe96d4763a747273e73d91f175dc6e1107" # flatcar-master
 	KEYWORDS="amd64 arm arm64 x86"
 fi