kbuild: deb-pkg: set version for linux-headers paths

As a result of the switch to dh_listpackages, $version is no longer set
when install_kernel_headers() is called.  This causes files in the
linux-headers deb package to be installed to a path with an empty
$version (e.g. /usr/src/linux-headers-/scripts/sign-file rather than
/usr/src/linux-headers-6.3.0-rc3/scripts/sign-file).

To avoid this, while continuing to use the version information from
dh_listpackages, pass $version from $package as the second argument
of install_kernel_headers().

Fixes: 36862e14 ("kbuild: deb-pkg: use dh_listpackages to know enabled packages")
Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/package/builddeb

@@ -162,6 +162,7 @@ install_linux_image_dbg () {
 
 install_kernel_headers () {
 	pdir=$1
+	version=$2
 
 	rm -rf $pdir
 
@@ -229,7 +230,7 @@ do
 	linux-libc-dev)
 		install_libc_headers debian/linux-libc-dev;;
 	linux-headers-*)
-		install_kernel_headers debian/linux-headers;;
+		install_kernel_headers debian/linux-headers ${package#linux-headers-};;
 	esac
 done