mvgbe: remove setting of ethaddr within the driver

mvgbe: remove setting of ethaddr within the driver

A network driver should not touch the environment at all. This patch fixes
this behaviour by removing the code for setting a default/randomized MAC
address.

Signed-off-by: Michael Walle <[email protected]>
Acked-by: Mike Frysinger <[email protected]>
Acked-by: Prafulla Wadaskar <[email protected]>
Cc: Mike Frysinger <[email protected]>
Cc: Prafulla Wadaskar <[email protected]>
Cc: Valentin Longchamp <[email protected]>
Cc: Eric Cooper <[email protected]>
Cc: Jason Cooper <[email protected]>
Cc: Siddarth Gore <[email protected]>
Cc: Albert ARIBAUD <[email protected]>
Cc: Simon Guinot <[email protected]>
Acked-by: Prafulla Wadaskar <[email protected]>