Added support for linux-info.eclass in "copy" build stage

src/root/config/rootfs-cp.excludes

@@ -10,7 +10,7 @@
 /usr/portage/**
 
 # Sources
-/usr/src/linux*
+/usr/src/linux-*/**
 /usr/lib/klibc/
 
 # Documentation

src/root/config/rootfs.includes

@@ -32,3 +32,7 @@
 
 # Transient directories (excluded during image creation)
 /tmp/transient/***
+
+# Support linux-info.eclass ("copy" phase only)
+/usr/src/linux-[0-9]*/Makefile
+/usr/src/linux-main/.config