Add SCMI support for Juno platform

This patch adds the memory map region for the SCMI payload memory
and maps the Juno core indices to SCMI power domains via the
`plat_css_core_pos_to_scmi_dmn_id_map` array.

Change-Id: I0d2bb2a719ff5b6a9d8e22e91e1625ab14453665
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
diff --git a/include/plat/arm/css/common/css_def.h b/include/plat/arm/css/common/css_def.h
index 4c4dece..0b74ced 100644
--- a/include/plat/arm/css/common/css_def.h
+++ b/include/plat/arm/css/common/css_def.h
@@ -74,6 +74,11 @@
 						CSS_DEVICE_SIZE,	\
 						MT_DEVICE | MT_RW | MT_SECURE)
 
+#define CSS_MAP_NSRAM			MAP_REGION_FLAT(		\
+						NSRAM_BASE,	\
+						NSRAM_SIZE,	\
+						MT_DEVICE | MT_RW | MT_SECURE)
+
 /* Platform ID address */
 #define SSC_VERSION_OFFSET			0x040