Allow implicit-fallthrough warnings locally.

It will be a global error by default.

Test: make checkbuild
Bug: 112564944
Change-Id: I5e1c707b620590ab9ebd3e9d2a38b3a3c4e473c4
Exempt-From-Owner-Approval: do not block on new warnings
diff --git a/services/inputflinger/Android.bp b/services/inputflinger/Android.bp
index a9e5a43..8871199 100644
--- a/services/inputflinger/Android.bp
+++ b/services/inputflinger/Android.bp
@@ -41,6 +41,8 @@
         "-Wall",
         "-Wextra",
         "-Werror",
+        // Allow implicit fallthroughs in InputReader.cpp until they are fixed.
+        "-Wno-error=implicit-fallthrough",
         "-Wno-unused-parameter",
         // TODO: Move inputflinger to its own process and mark it hidden
         //-fvisibility=hidden