plat/arm: Add support for SGM775

Add support for System Guidance for Mobile platform SGM775

Change-Id: I2442a50caae8f597e5e5949cd48f695cf75d9653
Signed-off-by: Nariman Poushin <nariman.poushin@linaro.org>
diff --git a/plat/arm/css/sgm/tsp/sgm_tsp_setup.c b/plat/arm/css/sgm/tsp/sgm_tsp_setup.c
new file mode 100644
index 0000000..39bba94
--- /dev/null
+++ b/plat/arm/css/sgm/tsp/sgm_tsp_setup.c
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <plat_arm.h>
+#include <sgm_plat_config.h>
+
+void tsp_early_platform_setup(void)
+{
+	/* Initialize the platform configuration structure */
+	plat_config_init();
+
+	arm_tsp_early_platform_setup();
+}
diff --git a/plat/arm/css/sgm/tsp/tsp-sgm.mk b/plat/arm/css/sgm/tsp/tsp-sgm.mk
new file mode 100644
index 0000000..a9e4131
--- /dev/null
+++ b/plat/arm/css/sgm/tsp/tsp-sgm.mk
@@ -0,0 +1,11 @@
+#
+# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+BL32_SOURCES		+= 	${SGM_GIC_SOURCES}			\
+				${CSS_SGM_BASE}/sgm_plat_config.c	\
+				plat/arm/board/sgm/tsp/sgm_tsp_setup.c
+
+include plat/arm/common/tsp/arm_tsp.mk