OWNERS: Add Chau Ly as reviewer for FileIO

I have been committing code related to DSP0242 - PLDM File Transfer, so
I volunteer to review future commits related to this feature in the
repo.

Change-Id: If2393e19e9461e54b2e00e0f47b5eafe53d2d847
Signed-off-by: Chau Ly <chaul@amperecomputing.com>
diff --git a/OWNERS b/OWNERS
index 608666b..34588e7 100644
--- a/OWNERS
+++ b/OWNERS
@@ -38,8 +38,12 @@
 - manojkiran.eda@gmail.com
 - rushtotom@gmail.com
 - pavithrabarithaya07@gmail.com
+- chaul@amperecomputing.com
 
 matchers:
+- partial_regex: /dsp/(file|base)\.
+  reviewers:
+  - chaul@amperecomputing.com
 
 openbmc:
 - name: Andrew Jeffery
@@ -54,3 +58,6 @@
 - name: Pavithra Barithaya
   email: pavithrabarithaya07@gmail.com
   discord: Pavithra B
+- name: Chau Ly
+  email: chaul@amperecomputing.com
+  discord: T.Chau Ly