Update path to demo_common.sh

This commit updates the path to demo_common.sh as it has been moved into
MbedTLS Framework.

Signed-off-by: Harry Ramsey <harry.ramsey@arm.com>
diff --git a/programs/psa/key_ladder_demo.sh b/programs/psa/key_ladder_demo.sh
index e55da7e..e3afb66 100755
--- a/programs/psa/key_ladder_demo.sh
+++ b/programs/psa/key_ladder_demo.sh
@@ -3,7 +3,7 @@
 # Copyright The Mbed TLS Contributors
 # SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 
-. "${0%/*}/../demo_common.sh"
+. "${0%/*}/../../framework/scripts/demo_common.sh"
 
 msg <<'EOF'
 This script demonstrates the use of the PSA cryptography interface to
diff --git a/programs/psa/psa_hash_demo.sh b/programs/psa/psa_hash_demo.sh
index a26697c..c2cc87a 100755
--- a/programs/psa/psa_hash_demo.sh
+++ b/programs/psa/psa_hash_demo.sh
@@ -3,7 +3,7 @@
 # Copyright The Mbed TLS Contributors
 # SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 
-. "${0%/*}/../demo_common.sh"
+. "${0%/*}/../../framework/scripts/demo_common.sh"
 
 msg <<'EOF'
 This program demonstrates the use of the PSA cryptography interface to