hw/bluetooth.default.so -> libbluetooth.so (1/2)

Also rename the build goal for both the library and headers.

Bug: 67853426
Test: run Bluetooth
Merged-In: Iaffeebc1d3f2761e13f6d66d4e855dc342603054
Change-Id: Iaffeebc1d3f2761e13f6d66d4e855dc342603054
(cherry picked from commit 842ff8ed7f5b00d5f6da9d975f37e65c41bb8ebc)
diff --git a/btcore/Android.bp b/btcore/Android.bp
index f5a76e3..6c6d22e 100644
--- a/btcore/Android.bp
+++ b/btcore/Android.bp
@@ -15,7 +15,7 @@
     shared_libs: [
         "liblog",
     ],
-    header_libs: ["bluetooth.default_headers"],
+    header_libs: ["libbluetooth_headers"],
     host_supported: true,
     target: {
         darwin: {