Merge pull request #1214 from dp-arm/dp/cve_2017_5715

Workarounds for CVE-2017-5715 on Cortex A57/A72/A73 and A75
diff --git a/include/plat/arm/board/common/board_arm_def.h b/include/plat/arm/board/common/board_arm_def.h
index e0c3c86..888629e 100644
--- a/include/plat/arm/board/common/board_arm_def.h
+++ b/include/plat/arm/board/common/board_arm_def.h
@@ -90,7 +90,7 @@
  * PLAT_ARM_MAX_BL31_SIZE is calculated using the current BL31 debug size plus a
  * little space for growth.
  */
-#define PLAT_ARM_MAX_BL31_SIZE		0x1E000
+#define PLAT_ARM_MAX_BL31_SIZE		0x20000
 
 #ifdef AARCH32
 /*