Add support for Cortex-A75 and Cortex-A55 CPUs

Both Cortex-A75 and Cortex-A55 CPUs use the ARM DynamIQ Shared Unit
(DSU). The power-down and power-up sequences are therefore mostly
managed in hardware, and required software operations are considerably
simpler.

Change-Id: I68b30e6e1ebe7c041d5e67f39c59f08575fc7ecc
Co-authored-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
diff --git a/plat/arm/board/fvp/platform.mk b/plat/arm/board/fvp/platform.mk
index 6a759c5..6dae116 100644
--- a/plat/arm/board/fvp/platform.mk
+++ b/plat/arm/board/fvp/platform.mk
@@ -82,9 +82,11 @@
 ifeq (${ARCH}, aarch64)
 FVP_CPU_LIBS		+=	lib/cpus/aarch64/cortex_a35.S			\
 				lib/cpus/aarch64/cortex_a53.S			\
+				lib/cpus/aarch64/cortex_a55.S			\
 				lib/cpus/aarch64/cortex_a57.S			\
 				lib/cpus/aarch64/cortex_a72.S			\
-				lib/cpus/aarch64/cortex_a73.S
+				lib/cpus/aarch64/cortex_a73.S			\
+				lib/cpus/aarch64/cortex_a75.S
 else
 FVP_CPU_LIBS		+=	lib/cpus/aarch32/cortex_a32.S
 endif