Update OWNERS for external/gemmlowp. am: 6bb8a0b5c3 am: 5f26e3fb5c am: c4f304facf

Original change: https://android-review.googlesource.com/c/platform/external/gemmlowp/+/1944922

Change-Id: I142e9e7bf136fc5ac72dc647ba021a78cbe74d60
diff --git a/OWNERS b/OWNERS
index e05da8e..e5412e2 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1 +1,2 @@
 miaowang@google.com
+ianhua@google.com