arm: total_compute: increase DRAM to 8GB

The extra 6GB start at 0x8080000000.

Signed-off-by: Usama Arif <usama.arif@arm.com>
diff --git a/include/configs/total_compute.h b/include/configs/total_compute.h
index bbeedaf..933a145 100644
--- a/include/configs/total_compute.h
+++ b/include/configs/total_compute.h
@@ -30,6 +30,9 @@
 #define PHYS_SDRAM_1_SIZE	0x80000000 - DRAM_SEC_SIZE
 #define CONFIG_SYS_SDRAM_BASE	PHYS_SDRAM_1
 
+#define PHYS_SDRAM_2		0x8080000000
+#define PHYS_SDRAM_2_SIZE	0x180000000
+
 #define CONFIG_SYS_MMC_MAX_BLK_COUNT		127
 
 #define CONFIG_EXTRA_ENV_SETTINGS	\