tc0: set maxcpus to 8 for DSU

Change-Id: Ia5450e69a0139f6866d35e124effa3cb1f71515f
Signed-off-by: Arunachalam Ganapathy <arunachalam.ganapathy@arm.com>
Signed-off-by: Usama Arif <usama.arif@arm.com>
diff --git a/BUILD.gn b/BUILD.gn
index f79ee7e..2d08dad 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -163,7 +163,7 @@
   gicd_base_address = "0x30000000"
   gicr_base_address = "0x30140000"
   heap_pages = 60
-  max_cpus = 4
+  max_cpus = 8
   max_vms = 16
   toolchain_args = {
     plat_psci = "//src/arch/aarch64/plat/psci:spmc"