Added Serdar to the GpuService OWNERS file

Bug: 289078535
Change-Id: I4a8e8e5e78bb3440bad0fa7eb140049236502d7b
Test: Land a CL at a later date
diff --git a/services/gpuservice/OWNERS b/services/gpuservice/OWNERS
index 0ff65bf..07c681f 100644
--- a/services/gpuservice/OWNERS
+++ b/services/gpuservice/OWNERS
@@ -4,3 +4,4 @@
 lfy@google.com
 paulthomson@google.com
 pbaiget@google.com
+kocdemir@google.com