legal-info: explicitly state how patches are licensed

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
[yann.morin.1998@free.fr: slightly tweak after Arnout's review]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle <arnout@mind.be>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

support/legal-info/README.header

@@ -18,7 +18,8 @@ This material is composed of the following items.
    sources/ subdirectory (except for the non-redistributable packages, which
    have not been saved). Patches that were applied are also saved, along
    with a file named 'series' that lists the patches in the order they were
-   applied.
+   applied. Patches are under the same license as the files that they modify
+   in the original package.
  * A manifest file listing the configured packages and related information.
  * The license text of the packages; they have been saved in the licenses/
    subdirectory.