Update gold to build #2098274.

Built from toolchain/binutils 5b0b7aca66a30692402df9a9909ebbad7acac259

Contains Yiran's patch to work around overly aggressive hidden symbol
warning.

Bug: http://b/21502954
Change-Id: If30c8c74200d87931f177b38c2724d336750200c
(cherry picked from commit c0371efb25365f44e0ad4ea61a74d6e4fb84f3ce)
diff --git a/bin/x86_64-linux-android-ld.gold b/bin/x86_64-linux-android-ld.gold
index e7f1dad..6e45ba2 100755
--- a/bin/x86_64-linux-android-ld.gold
+++ b/bin/x86_64-linux-android-ld.gold
Binary files differ