Guard with a soong_namespace

hardware/samsung modules shouldn't be globally available for every
device. They can cause conflicts with other devices and break things.
One notable example is aidl/memtrack overwriting pixel .rc and thus
breaking memtrack on Pixel 6 and 7, which results in non booting device.

Change-Id: I78b1b9930a57bc01afda722b9f8a196c372f9d8b

Android.bp

@@ -0,0 +1,2 @@
+soong_namespace {
+}