stmmac: update MAINTAINERS

Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/MAINTAINERS b/MAINTAINERS
index 7ba7bc48..67d99dd 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3348,6 +3348,7 @@
 
 STMMAC ETHERNET DRIVER
 M:	Giuseppe Cavallaro <peppe.cavallaro@st.com>
+M:	Alexandre Torgue <alexandre.torgue@st.com>
 L:	netdev@vger.kernel.org
 W:	http://www.stlinux.com
 S:	Supported