LICENSES: Add missing licenses and exceptions

These licenses and exceptions are allowed by coreboot's license checker,
but the copies of the licenses were missing from the LICENSES directory.

Signed-off-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Change-Id: Ic4233e556de08275fe50f1ec83828f9470b4b566
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66494
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
diff --git a/LICENSES/HPND-sell-variant.txt b/LICENSES/HPND-sell-variant.txt
new file mode 100644
index 0000000..fb0c50c
--- /dev/null
+++ b/LICENSES/HPND-sell-variant.txt
@@ -0,0 +1,18 @@
+Permission to use, copy, modify, distribute, and sell this software and
+its documentation for any purpose is hereby granted without fee,
+provided that the above copyright notice appears in all copies, and that
+both that the copyright notice and this permission notice appear in
+supporting documentation, and that the name of <copyright holder> <or
+related entities> not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior permission
+. <copyright holder> makes no representations about the suitability of
+this software for any purpose. It is provided "as is" without express or
+implied warranty.
+
+<copyright holder> DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS . IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.