Update Android.bp with recent Android.mk changes

This ports Idb3d445e053c44180773f59774df19b324f6817f to Android.bp

Change-Id: Id5cdb450330792810b8eb61b3cab115ef046e55d
diff --git a/libc/Android.bp b/libc/Android.bp
index 8ec2b92..cbca35f 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -45,6 +45,7 @@
         "-Wall",
         "-Wextra",
         "-Wunused",
+        "-Wno-deprecated-declarations",
 
         // Try to catch typical 32-bit assumptions that break with 64-bit pointers.
         "-Werror=pointer-to-int-cast",