owners: Add Lei Yu to reviewers

Lei maintains several repos in OpenBMC and would like to become reviewer
for general changes to OpenBMC.

Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Change-Id: I970d1ef6b4a2b80ca49cd8c7aa42839807fba181
diff --git a/OWNERS b/OWNERS
index 15b5149..a5954e3 100644
--- a/OWNERS
+++ b/OWNERS
@@ -38,6 +38,7 @@
 - andrew@aj.id.au
 - anoo@us.ibm.com
 - gmills@linux.vnet.ibm.com
+- yulei.sh@bytedance.com
 
 matchers:
 - exact: designs/device-tree-gpio-naming.md
@@ -64,6 +65,9 @@
 - name: Joel Stanley
   email: joel@jms.id.au
   discord: joel
+- name: Lei Yu
+  email: yulei.sh@bytedance.com
+  discord: LeiYU
 - name: Patrick Williams
   email: patrick@stwcx.xyz
   discord: stwcx