Req fake-nvram-seccomp.policy only on def'd archs.

For mips targets:
build/make/core/main.mk:592: warning: Missing required dependency fake-nvram-seccomp.policy from module fake-nvram defined in system/nvram/hal/Android.mk

Bug: 7456955
Test: above error no longer emitted
Change-Id: Ida412a861caf1921bb968d5d752a1e03b1b97a87
diff --git a/hal/Android.mk b/hal/Android.mk
index 973ac38..49445d5 100644
--- a/hal/Android.mk
+++ b/hal/Android.mk
@@ -36,7 +36,12 @@
 	libcutils \
 	libbase
 LOCAL_INIT_RC := fake-nvram.rc
-LOCAL_REQUIRED_MODULES := fake-nvram-seccomp.policy
+
+LOCAL_REQUIRED_MODULES_arm := fake-nvram-seccomp.policy
+LOCAL_REQUIRED_MODULES_arm64 := fake-nvram-seccomp.policy
+LOCAL_REQUIRED_MODULES_x86 := fake-nvram-seccomp.policy
+LOCAL_REQUIRED_MODULES_x86_64 := fake-nvram-seccomp.policy
+
 LOCAL_MODULE_TAGS := optional
 include $(BUILD_EXECUTABLE)