samsung_slsi-linaro/interfaces: guard with a namespace (5/6)

Change-Id: I9b51df7ca8e04f7bd3fcb0a5aba860be2298dee2
diff --git a/Android.bp b/Android.bp
index e28f1a0..fae6b49 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,3 +1,9 @@
+soong_namespace {
+    imports:[
+        "hardware/samsung_slsi-linaro/exynos",
+        "hardware/samsung_slsi-linaro/graphics"
+    ],
+}
 hidl_package_root {
     name: "vendor.samsung_slsi.hardware.epic",
     path: "hardware/samsung_slsi-linaro/interfaces/epic",