TF-A: Add build config for dual-chip RD-N1-Edge

Add TBB build configuration for dual-chip RD-N1-Edge to tf-l1-build-fvp
build group.

Change-Id: I4912367314b9bc2cc7cc95cb710e5052bc3d283b
Signed-off-by: Vijayenthiran Subramaniam <vijayenthiran.subramaniam@arm.com>
diff --git a/group/tf-l1-build-fvp/fvp-rdn1edgex2-tbb:nil b/group/tf-l1-build-fvp/fvp-rdn1edgex2-tbb:nil
new file mode 100644
index 0000000..d52947d
--- /dev/null
+++ b/group/tf-l1-build-fvp/fvp-rdn1edgex2-tbb:nil
@@ -0,0 +1,6 @@
+#
+# Copyright (c) 2020, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
diff --git a/tf_config/fvp-rdn1edgex2-tbb b/tf_config/fvp-rdn1edgex2-tbb
new file mode 100644
index 0000000..b163f39
--- /dev/null
+++ b/tf_config/fvp-rdn1edgex2-tbb
@@ -0,0 +1,8 @@
+ARM_ROTPK_LOCATION=devel_rsa
+CREATE_KEYS=1
+CROSS_COMPILE=aarch64-none-elf-
+GENERATE_COT=1
+CSS_SGI_CHIP_COUNT=2
+PLAT=rdn1edge
+ROT_KEY=plat/arm/board/common/rotpk/arm_rotprivk_rsa.pem
+TRUSTED_BOARD_BOOT=1