[gcc r12-6670] Update email address

[Xiong Hu Luo]

https://gcc.gnu.org/g:0efc551e59f544ab25aeb527ccb2c8b82a03c108

commit r12-6670-g0efc551e59f544ab25aeb527ccb2c8b82a03c108
Author: Xionghu Luo <luoxhu@linux.ibm.com>
Date:   Tue Jan 18 07:19:17 2022 -0600

    Update email address
    
    ChangeLog:
    
            * MAINTAINERS: Update my email address.

Diff:
---
 MAINTAINERS | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 399de265065..889e0538d49 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -517,7 +517,7 @@ Manuel López-Ibáñez				<manu@gcc.gnu.org>
 Carl Love					<cel@us.ibm.com>
 Martin v. Löwis					<loewis@informatik.hu-berlin.de>
 H.J. Lu						<hjl.tools@gmail.com>
-Xiong Hu Luo					<luoxhu@linux.vnet.ibm.com>
+Xiong Hu Luo					<luoxhu@gcc.gnu.org>
 Bin Bin Lv					<shlb@linux.ibm.com>
 Christophe Lyon					<christophe.lyon@st.com>
 Jun Ma						<junma@linux.alibaba.com>