MAINTAINERS: eth: mvneta: update entry

Add myself as driver maintainer and restore the maintained status.
While at it, update the file field to cover mvneta_bm part of the driver.

Signed-off-by: Marcin Wojtas <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: wojtas-marcin

MAINTAINERS

@@ -12869,9 +12869,10 @@ S:	Maintained
 F:	drivers/thermal/armada_thermal.c
 
 MARVELL MVNETA ETHERNET DRIVER
+M:	Marcin Wojtas <[email protected]>
 L:	[email protected]
-S:	Orphan
-F:	drivers/net/ethernet/marvell/mvneta.*
+S:	Maintained
+F:	drivers/net/ethernet/marvell/mvneta*
 
 MARVELL MVPP2 ETHERNET DRIVER
 M:	Marcin Wojtas <[email protected]>