sgi/dyncfg: add system-id node in hw-config dtb

Append a node to hw-config dtb which will include a property to hold
the value of the SSC_VERSION register. This will be used by the BL33
stage to determine the platform-id and the config-id of the platform
it is executing on.

Change-Id: Ie7b1e5d8c1bbe0efdb7ef0714f14b7794ec6058e
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Signed-off-by: Chandni Cherukuri <chandni.cherukuri@arm.com>
diff --git a/plat/arm/css/sgi/sgi-common.mk b/plat/arm/css/sgi/sgi-common.mk
index d27cafe..f4092f3 100644
--- a/plat/arm/css/sgi/sgi-common.mk
+++ b/plat/arm/css/sgi/sgi-common.mk
@@ -30,7 +30,8 @@
 				${CSS_ENT_BASE}/sgi_bl1_setup.c	\
 				${CSS_ENT_BASE}/sgi_plat_config.c
 
-BL2_SOURCES		+=	${CSS_ENT_BASE}/sgi_security.c
+BL2_SOURCES		+=	${CSS_ENT_BASE}/sgi_security.c		\
+				${CSS_ENT_BASE}/sgi_image_load.c
 
 BL31_SOURCES		+=	${ENT_CPU_SOURCES}			\
 				${INTERCONNECT_SOURCES}			\