AArch32: Add SP_MIN support for JUNO

This patch adds support for SP_MIN on JUNO platform.
The changes include addition of AArch32 assembly files,
JUNO specific SP_MIN make file and miscellaneous changes
in ARM platform files to enable support for SP_MIN.

Change-Id: Id1303f422fc9b98b9362c757b1a4225a16fffc0b
Signed-off-by: Yatharth Kochar <yatharth.kochar@arm.com>
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>
diff --git a/plat/arm/board/common/board_css_common.c b/plat/arm/board/common/board_css_common.c
index 3fcc6ee..6593d2a 100644
--- a/plat/arm/board/common/board_css_common.c
+++ b/plat/arm/board/common/board_css_common.c
@@ -79,6 +79,9 @@
 #endif
 #ifdef IMAGE_BL32
 const mmap_region_t plat_arm_mmap[] = {
+#ifdef AARCH32
+	ARM_MAP_SHARED_RAM,
+#endif
 	V2M_MAP_IOFPGA,
 	CSS_MAP_DEVICE,
 	SOC_CSS_MAP_DEVICE,