chore(fvp): add the aarch32 cortex A57 to the build

Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Change-Id: I80921b501ad9a97ddf23c371642a0a5e3f56cd99
diff --git a/plat/arm/board/fvp/platform.mk b/plat/arm/board/fvp/platform.mk
index 9b09a6b..748da13 100644
--- a/plat/arm/board/fvp/platform.mk
+++ b/plat/arm/board/fvp/platform.mk
@@ -153,7 +153,8 @@
 endif
 
 else
-FVP_CPU_LIBS		+=	lib/cpus/aarch32/cortex_a32.S
+FVP_CPU_LIBS		+=	lib/cpus/aarch32/cortex_a32.S			\
+				lib/cpus/aarch32/cortex_a57.S
 endif
 
 BL1_SOURCES		+=	drivers/arm/smmu/smmu_v3.c			\