Build Linux tests.

Change-Id: Icea6f2b37f2139da227a6b9b2b4cebb59649520c
diff --git a/BUILD.gn b/BUILD.gn
index 2bd65ed..431bf28 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -31,6 +31,7 @@
   deps = [
     "//src:unit_tests(:host_fake_clang)",
     "//test/arch(:qemu_aarch64_clang)",
+    "//test/linux(:qemu_aarch64_clang)",
     "//test/vmapi(:qemu_aarch64_clang)",
     "//test/vmapi/gicv3:gicv3_test(:qemu_aarch64_clang)",
   ]