plat/arm: Add platform support for Morello

This patch adds support for Morello platform.
It is an initial port which includes only BL31 support
as the System Control Processor (SCP) is expected to take
the role of primary bootloader.

Change-Id: I1ecbe5a14a2d487b2ecea3c1ca227f08473ed2dd
Co-authored-by: Chandni Cherukuri <chandni.cherukuri@arm.com>
Signed-off-by: Chandni Cherukuri <chandni.cherukuri@arm.com>
Signed-off-by: Anurag Koul <anurag.koul@arm.com>
diff --git a/plat/arm/board/morello/morello_interconnect.c b/plat/arm/board/morello/morello_interconnect.c
new file mode 100644
index 0000000..d941bfe
--- /dev/null
+++ b/plat/arm/board/morello/morello_interconnect.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2020, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+/*
+ * For MORELLO which supports FCM (with automatic interconnect enter/exit),
+ * we should not do anything in these interface functions.
+ * They are used to override the weak functions in cci drivers.
+ */
+
+/******************************************************************************
+ * Helper function to initialize ARM interconnect driver.
+ *****************************************************************************/
+void plat_arm_interconnect_init(void)
+{
+}
+
+/******************************************************************************
+ * Helper function to place current master into coherency
+ *****************************************************************************/
+void plat_arm_interconnect_enter_coherency(void)
+{
+}
+
+/******************************************************************************
+ * Helper function to remove current master from coherency
+ *****************************************************************************/
+void plat_arm_interconnect_exit_coherency(void)
+{
+}