refactor(sgi): rename "CSS_SGI"" macro prefixes to "NRD"

As of now, several internal macros utilize "CSS_SGI" as their prefix.
Given the change to neoverse_rd, and the subsequent migration out of the
css directory, the prefix "CSS_SGI" is no longer appropriate.
Therefore, update the macro prefixes to "NRD" for consistency and
clarity.

Signed-off-by: Rohit Mathew <Rohit.Mathew@arm.com>
Change-Id: I3d1a9dba3e83f6e107379fc5bcf8256cc93d8c3d
diff --git a/plat/arm/board/neoverse_rd/platform/rdn2/rdn2_plat.c b/plat/arm/board/neoverse_rd/platform/rdn2/rdn2_plat.c
index 24072ca..0051049 100644
--- a/plat/arm/board/neoverse_rd/platform/rdn2/rdn2_plat.c
+++ b/plat/arm/board/neoverse_rd/platform/rdn2/rdn2_plat.c
@@ -19,15 +19,15 @@
 static const mmap_region_t rdn2mc_dynamic_mmap[] = {
 #if NRD_CHIP_COUNT > 1
 	ARM_MAP_SHARED_RAM_REMOTE_CHIP(1),
-	CSS_SGI_MAP_DEVICE_REMOTE_CHIP(1),
+	NRD_MAP_DEVICE_REMOTE_CHIP(1),
 #endif
 #if NRD_CHIP_COUNT > 2
 	ARM_MAP_SHARED_RAM_REMOTE_CHIP(2),
-	CSS_SGI_MAP_DEVICE_REMOTE_CHIP(2),
+	NRD_MAP_DEVICE_REMOTE_CHIP(2),
 #endif
 #if NRD_CHIP_COUNT > 3
 	ARM_MAP_SHARED_RAM_REMOTE_CHIP(3),
-	CSS_SGI_MAP_DEVICE_REMOTE_CHIP(3),
+	NRD_MAP_DEVICE_REMOTE_CHIP(3),
 #endif
 };
 #endif
@@ -40,13 +40,13 @@
 	.chip_addrs = {
 		PLAT_ARM_GICD_BASE >> 16,
 #if NRD_CHIP_COUNT > 1
-		(PLAT_ARM_GICD_BASE + CSS_SGI_REMOTE_CHIP_MEM_OFFSET(1)) >> 16,
+		(PLAT_ARM_GICD_BASE + NRD_REMOTE_CHIP_MEM_OFFSET(1)) >> 16,
 #endif
 #if NRD_CHIP_COUNT > 2
-		(PLAT_ARM_GICD_BASE + CSS_SGI_REMOTE_CHIP_MEM_OFFSET(2)) >> 16,
+		(PLAT_ARM_GICD_BASE + NRD_REMOTE_CHIP_MEM_OFFSET(2)) >> 16,
 #endif
 #if NRD_CHIP_COUNT > 3
-		(PLAT_ARM_GICD_BASE + CSS_SGI_REMOTE_CHIP_MEM_OFFSET(3)) >> 16,
+		(PLAT_ARM_GICD_BASE + NRD_REMOTE_CHIP_MEM_OFFSET(3)) >> 16,
 #endif
 	},
 	.spi_ids = {
@@ -70,15 +70,15 @@
 	PLAT_ARM_GICR_BASE,
 #if NRD_CHIP_COUNT > 1
 	/* Chip 1's GICR BASE */
-	PLAT_ARM_GICR_BASE + CSS_SGI_REMOTE_CHIP_MEM_OFFSET(1),
+	PLAT_ARM_GICR_BASE + NRD_REMOTE_CHIP_MEM_OFFSET(1),
 #endif
 #if NRD_CHIP_COUNT > 2
 	/* Chip 2's GICR BASE */
-	PLAT_ARM_GICR_BASE + CSS_SGI_REMOTE_CHIP_MEM_OFFSET(2),
+	PLAT_ARM_GICR_BASE + NRD_REMOTE_CHIP_MEM_OFFSET(2),
 #endif
 #if NRD_CHIP_COUNT > 3
 	/* Chip 3's GICR BASE */
-	PLAT_ARM_GICR_BASE + CSS_SGI_REMOTE_CHIP_MEM_OFFSET(3),
+	PLAT_ARM_GICR_BASE + NRD_REMOTE_CHIP_MEM_OFFSET(3),
 #endif
 	UL(0)	/* Zero Termination */
 };