tc0: update GICR base address

The number of ITS have changed from 4 to 1, resulting
in GICR base address change.

Signed-off-by: Usama Arif <usama.arif@arm.com>
Change-Id: Ib6cbbf45152ac240ef068090062c8dbad22506ae
diff --git a/BUILD.gn b/BUILD.gn
index 2d08dad..293da92 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -161,7 +161,7 @@
   iommu = "//src/iommu:absent"
   gic_version = 3
   gicd_base_address = "0x30000000"
-  gicr_base_address = "0x30140000"
+  gicr_base_address = "0x30080000"
   heap_pages = 60
   max_cpus = 8
   max_vms = 16