Update FP16 dependency.

Update the cmake download path for fp16.
diff --git a/WORKSPACE b/WORKSPACE
index c772982..4fa1aa2 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -26,10 +26,10 @@
 # FP16 library, used for half-precision conversions
 http_archive(
     name = "FP16",
-    strip_prefix = "FP16-3c54eacb74f6f5e39077300c5564156c424d77ba",
-    sha256 = "0d56bb92f649ec294dbccb13e04865e3c82933b6f6735d1d7145de45da700156",
+    strip_prefix = "FP16-0a92994d729ff76a58f692d3028ca1b64b145d91",
+    sha256 = "e66e65515fa09927b348d3d584c68be4215cfe664100d01c9dbc7655a5716d70",
     urls = [
-        "https://github.com/Maratyszcza/FP16/archive/3c54eacb74f6f5e39077300c5564156c424d77ba.zip",
+        "https://github.com/Maratyszcza/FP16/archive/0a92994d729ff76a58f692d3028ca1b64b145d91.zip",
     ],
     build_file = "@//third_party:FP16.BUILD",
 )