secure platforms: Add plat specific ffa code

Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>
Change-Id: Ic77f3836dd5194931c412ac265962cbe91e4d960
diff --git a/BUILD.gn b/BUILD.gn
index 2da4aff..624c0e7 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -69,6 +69,7 @@
   max_vms = 16
   branch_protection = "standard"
   toolchain_args = {
+    plat_ffa = "//src/arch/aarch64/plat/ffa:spmc"
     plat_psci = "//src/arch/aarch64/plat/psci:spmc"
     plat_interrupts = "//src/arch/aarch64/plat/interrupts:gicv3"
     plat_prng = "//src/arch/aarch64/plat/prng:prng"
@@ -93,6 +94,7 @@
   max_cpus = 8
   max_vms = 16
   toolchain_args = {
+    plat_ffa = "//src/arch/aarch64/plat/ffa:hypervisor"
     pl011_base_address = "0x1c090000"
     smmu_base_address = "0x2b400000"
     smmu_memory_size = "0x100000"
@@ -127,6 +129,7 @@
   max_cpus = 4
   max_vms = 16
   toolchain_args = {
+    plat_ffa = "//src/arch/aarch64/plat/ffa:hypervisor"
     gpio_base_address = "0xfe200000"
     aux_base_address = "0xfe215000"
     core_freq_mhz = 500
@@ -173,6 +176,7 @@
   max_vms = 16
   branch_protection = "standard"
   toolchain_args = {
+    plat_ffa = "//src/arch/aarch64/plat/ffa:spmc"
     plat_psci = "//src/arch/aarch64/plat/psci:spmc"
     plat_interrupts = "//src/arch/aarch64/plat/interrupts:gicv3"
     plat_prng = "//src/arch/aarch64/plat/prng:prng"