libcamera: ipa: Move key generation to utils

Move the GPLv2 utilities used for generating public and private keys to
the utilities subtree.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

src/ipa/gen-ipa-priv-key.sh

@@ -1,11 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0-or-later
-# Copyright (C) 2020, Google Inc.
-#
-# Author: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
-#
-# gen-ipa-priv-key.sh - Generate an RSA private key to sign IPA modules
-
-key="$1"
-
-openssl genpkey -algorithm RSA -out "${key}" -pkeyopt rsa_keygen_bits:2048