List baseline_filename on modules that are implititly using it

lintable modules currently pick up files named "lint-baseline.xml" to use as the
lint baseline implicitly. This is confusing because you could end up using the
baseline files in more modules than intended. Lint also has a feature where it
requests you remove unnecessary findings from the baseline file, so something
could be necessary for one module, but unnecessary for another that accidentally
picked up the baseline.

We're removing the implicit detection of the baseline file, which requires
all modules using it to list the baseline file explicitly.

Bug: 272769514
Test: Presubmits
Change-Id: Ia0fd37552da2f660b89a95833384253d4acd5ef5
diff --git a/Android.bp b/Android.bp
index 7a42f5f..6b6bf56 100644
--- a/Android.bp
+++ b/Android.bp
@@ -50,7 +50,10 @@
     min_sdk_version: "19",
     optimize: {
         proguard_flags_files: ["proguard.flags"],
-    }
+    },
+    lint: {
+        baseline_filename: "lint-baseline.xml",
+    },
 }
 
 //
@@ -65,5 +68,8 @@
         "strings/res",
     ],
     min_sdk_version: "19",
-    sdk_version: "current"
+    sdk_version: "current",
+    lint: {
+        baseline_filename: "lint-baseline.xml",
+    },
 }