MAINTAINERS: add Networking DSA area

Added Networking DSA area, and added yangbolu1991 and JiafeiPan
as maintainers.

Signed-off-by: Yangbo Lu <[email protected]>

Author: yangbolu1991

MAINTAINERS.yml

@@ -3667,6 +3667,25 @@ Networking:
     - net.dhcpv4_client
     - net.dhcpv4_server
 
+"Networking: DSA":
+  status: maintained
+  maintainers:
+    - yangbolu1991
+    - JiafeiPan
+  files:
+    - subsys/net/l2/ethernet/dsa/
+    - drivers/ethernet/dsa/
+    - dts/bindings/dsa/
+    - doc/connectivity/networking/dsa*
+    - include/zephyr/net/dsa*.h
+    - include/zephyr/dt-bindings/ethernet/dsa*.h
+    - samples/net/dsa/
+  labels:
+    - "area: Networking"
+    - "area: DSA"
+  tests:
+    - sample.net.dsa
+
 "Networking: HTTP":
   status: maintained
   maintainers: