makeModulesClosuse: read modules from corrent kernel version

Before this commit, the firmware information would be loaded from the
currently running kernel, not from the kernel to be loaded.

This commit ensures the correct kernel version and modules are read.

pkgs/build-support/kernel/modules-closure.sh

@@ -78,7 +78,7 @@ for module in $(cat closure); do
     #
     # For now, the workaround is just to filter out the extraneous lines out
     # of its output.
-    for i in $(modinfo -F firmware $module | grep -v '^name:'); do
+    for i in $(modinfo -b $kernel --set-version "$version" -F firmware $module | grep -v '^name:'); do
         mkdir -p "$out/lib/firmware/$(dirname "$i")"
         echo "firmware for $module: $i"
         cp "$firmware/lib/firmware/$i" "$out/lib/firmware/$i" 2>/dev/null || if test -z "$allowMissing"; then exit 1; fi