Fixing AudioFocusChange to be signed int

AudioFocusChange is expected to have negative values, but was originally
defined to be an unsigned int.

Bug: 153090512
Test: make -j
Change-Id: I27cd8134f9fe19fbefc788e5c2498947dc52967e
diff --git a/current.txt b/current.txt
index 183d006..e612e2e 100644
--- a/current.txt
+++ b/current.txt
@@ -635,7 +635,7 @@
 4bc4e8087f5c389f013370ed68bc8a1a29cb2f203237937697f35e005a5ad0b4 android.hardware.automotive.audiocontrol@2.0::IAudioControl
 37ef585d6687cb31e35c67ab456140d70edba9c4333ce5a6ddd70e636e985773 android.hardware.automotive.audiocontrol@2.0::ICloseHandle
 3cf3e5e48ba2642052bbccc1aa4e8bb142933ac960ff40eeedd16e4fe452e7a5 android.hardware.automotive.audiocontrol@2.0::IFocusListener
-d06fc14b325beeef06bd39de8f178f490d9e9095255626866071aab42be1fc40 android.hardware.automotive.audiocontrol@2.0::types
+44c03f3341939524b5f5acb6680f8a91924d02e335a32840d56597616db7f1ea android.hardware.automotive.audiocontrol@2.0::types
 949a2582c9efa3f6f631f56120eae3f02313f251dbf9246c327e419cdf0652a2 android.hardware.automotive.can@1.0::ICanBus
 43cddb1907a30343bced68946884416ea25ab14ae2df4709357528b2bedba84c android.hardware.automotive.can@1.0::ICanController
 272e826492b27b0dbdeda408e84a41ae43e98f29e57995b6452ded270aae4eee android.hardware.automotive.can@1.0::ICanErrorListener