Allow metatest.c to use crypto internal headers

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/programs/Makefile b/programs/Makefile
index f99021a..6c9d4d7 100644
--- a/programs/Makefile
+++ b/programs/Makefile
@@ -233,7 +233,7 @@
 
 test/metatest$(EXEXT): $(FRAMEWORK)/tests/programs/metatest.c $(DEP)
 	echo "  CC    $(FRAMEWORK)/tests/programs/metatest.c"
-	$(CC) $(LOCAL_CFLAGS) $(CFLAGS) -I../library -I../tf-psa-crypto/core $(FRAMEWORK)/tests/programs/metatest.c    $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
+	$(CC) $(LOCAL_CFLAGS) $(CFLAGS) -I../library -I../tf-psa-crypto/core -I../tf-psa-crypto/drivers/builtin/include -I../tf-psa-crypto/drivers/builtin/src $(FRAMEWORK)/tests/programs/metatest.c    $(LOCAL_LDFLAGS) $(LDFLAGS) -o $@
 
 test/query_config.o: test/query_config.c $(FRAMEWORK)/tests/programs/query_config.h $(DEP)
 	echo "  CC    test/query_config.c"