Add Lan Luo (@luolanzone) to maintainers (#6809)

We also update the maintainers' affiliation from VMware to Broadcom.

Congratulations Lan!

Closes #6805

Signed-off-by: Antonin Bas <antonin.bas@broadcom.com>

MAINTAINERS.md

@@ -5,7 +5,8 @@ role is described in [GOVERNANCE.md](GOVERNANCE.md).
 
 | Maintainer | GitHub ID | Affiliation |
 | ---------- | --------- | ----------- |
-| Antonin Bas | antoninbas | VMware |
-| Jianjun Shen | jianjuns | VMware |
-| Quan Tian | tnqn | VMware |
-| Salvatore Orlando | salv-orlando | VMware |
+| Antonin Bas | antoninbas | Broadcom |
+| Jianjun Shen | jianjuns | Broadcom |
+| Lan Luo | luolanzone | Broadcom |
+| Quan Tian | tnqn | Broadcom |
+| Salvatore Orlando | salv-orlando | Broadcom |