chore: rename hayes to a520

Rename Cortex-hayes to Cortes-A520

Change-Id: Ic574b55b1aaf11b5bf7b583e244245e7b54bdb22
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
diff --git a/plat/arm/board/tc/platform.mk b/plat/arm/board/tc/platform.mk
index 4faa98f..5a1d83a 100644
--- a/plat/arm/board/tc/platform.mk
+++ b/plat/arm/board/tc/platform.mk
@@ -78,7 +78,7 @@
 
 # CPU libraries for TARGET_PLATFORM=2
 ifeq (${TARGET_PLATFORM}, 2)
-TC_CPU_SOURCES	+=	lib/cpus/aarch64/cortex_hayes.S \
+TC_CPU_SOURCES	+=	lib/cpus/aarch64/cortex_a520.S \
 			lib/cpus/aarch64/cortex_a720.S \
 			lib/cpus/aarch64/cortex_x4.S
 endif