fix(fvp): increase NS_BL2U limit

Adjust NS_BL2U memory limit from 0x4E000 to 0x50000 to accommodate
growth in the `.bss` section of the xlat tables context module and
prevent overflows when loading the image into DRAM.

Change-Id: I5ddc9368f0eee4c6970a22c5c0389c07d2f2d3d7
Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
diff --git a/plat/arm/fvp/include/platform_def.h b/plat/arm/fvp/include/platform_def.h
index 60c33e9..be41a25 100644
--- a/plat/arm/fvp/include/platform_def.h
+++ b/plat/arm/fvp/include/platform_def.h
@@ -160,7 +160,7 @@
  * Base address and limit for NS_BL2U image.
  ******************************************************************************/
 #define NS_BL2U_BASE		DRAM_BASE
-#define NS_BL2U_LIMIT		(NS_BL2U_BASE + 0x4E000)
+#define NS_BL2U_LIMIT		(NS_BL2U_BASE + 0x50000)
 
 /******************************************************************************
  * Memory mapped Generic timer interfaces