Arm platforms: Rename PLAT_ARM_NS_IMAGE_OFFSET

PLAT_ARM_NS_IMAGE_OFFSET is in fact not an offset relative to some base
address, it is an absolute address. Rename it to avoid any confusion.

Change-Id: I1f7f5e8553cb267786afe7e5f3cd4d665b610d3f
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
diff --git a/plat/arm/board/fvp/include/platform_def.h b/plat/arm/board/fvp/include/platform_def.h
index fcf363d..1153101 100644
--- a/plat/arm/board/fvp/include/platform_def.h
+++ b/plat/arm/board/fvp/include/platform_def.h
@@ -53,7 +53,7 @@
 /*
  * Load address of BL33 for this platform port
  */
-#define PLAT_ARM_NS_IMAGE_OFFSET	(ARM_DRAM1_BASE + UL(0x8000000))
+#define PLAT_ARM_NS_IMAGE_BASE		(ARM_DRAM1_BASE + UL(0x8000000))
 
 /*
  * PLAT_ARM_MMAP_ENTRIES depends on the number of entries in the