Adapt libraries installation

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/Makefile b/Makefile
index b10ef62..67ad0b7 100644
--- a/Makefile
+++ b/Makefile
@@ -95,6 +95,7 @@
 install: no_test
 	mkdir -p $(DESTDIR)/include/mbedtls
 	cp -rp include/mbedtls $(DESTDIR)/include
+	cp -rp tf-psa-crypto/drivers/builtin/include/mbedtls $(DESTDIR)/include
 	mkdir -p $(DESTDIR)/include/psa
 	cp -rp tf-psa-crypto/include/psa $(DESTDIR)/include