MAINTAINERS: Update tg3 maintainer

Signed-off-by: NPrashant Sreedharan <prashant@broadcom.com>
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -1940,7 +1940,7 @@ F:	arch/arm/boot/dts/bcm5301x.dtsi
 F:	arch/arm/boot/dts/bcm470*
 
 BROADCOM TG3 GIGABIT ETHERNET DRIVER
-M:	Nithin Nayak Sujir <nsujir@broadcom.com>
+M:	Prashant Sreedharan <prashant@broadcom.com>
 M:	Michael Chan <mchan@broadcom.com>
 L:	netdev@vger.kernel.org
 S:	Supported