feat(morello): add changes to enable TBBR boot

This patch adds all SOC and FVP related changes required to boot
a standard TBBR style boot on Morello.

Signed-off-by: sahil <sahil@arm.com>
Change-Id: Ib8f7f326790b13082cbe8db21a980e048e3db88c
diff --git a/plat/arm/board/morello/morello_err.c b/plat/arm/board/morello/morello_err.c
new file mode 100644
index 0000000..4d20a09
--- /dev/null
+++ b/plat/arm/board/morello/morello_err.c
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2021, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <plat/arm/common/plat_arm.h>
+
+/*
+ * morello error handler
+ */
+void __dead2 plat_arm_error_handler(int err)
+{
+	while (true) {
+		wfi();
+	}
+}