stmmac: update MAINTAINERS

Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -3348,6 +3348,7 @@ F:	Documentation/powerpc/cxlflash.txt
 
 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