libc/Android.bp: fix bpfmt lint.

Change-Id: Ie3be47dd2a7c5610d9f1334c27b957915dd9fc36
diff --git a/libc/Android.bp b/libc/Android.bp
index 8dcc017..5063364 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -128,7 +128,7 @@
         android_x86: {
             pack_relocations: false,
             ldflags: ["-Wl,--hash-style=both"],
-        }
+        },
     },
 }