runtime: boot: fastboot: add modules to initramfs

When reviewing the kerenlci devices in the Qualcomm lab
I noticed we are not adding modules from the KCI artifacts
into the initramfs. This patch adds the modules into the initramfs
using the lava deploy schema.

Signed-off-by: Tyler Baker <[email protected]>

Author: EmbeddedAndroid

config/runtime/boot/fastboot.jinja2

@@ -10,6 +10,11 @@
         format: cpio.newc
         overlays:
           lava: true
+          modules:
+            url: '{{ node.artifacts.modules }}'
+            compression: xz
+            format: tar
+            path: /
 {% set dtb = device_dtb.split('/')[-1] %}
     postprocess:
       docker: