Camera: Centralize OWNERS

Test: Builds
Change-Id: I17830f84ebfeb11bf7cbe0ba5aa9f19838ec37be
diff --git a/camera/OWNERS b/camera/OWNERS
index 18acfee..d6b95da 100644
--- a/camera/OWNERS
+++ b/camera/OWNERS
@@ -1,6 +1,8 @@
-cychen@google.com
 epeev@google.com
 etalvala@google.com
+jchowdhary@google.com
 shuzhenwang@google.com
 yinchiayeh@google.com
+# backup owner
+cychen@google.com
 zhijunhe@google.com