net: mvmdio: adjust multiline comment to net/ style

As reported by checkpatch, the multiline comments for net/ and
drivers/net/ have a slightly different format than the one used in the
rest of the kernel, so we adjust our multiline comment accordingly.
Signed-off-by: NThomas Petazzoni <thomas.petazzoni@free-electrons.com>

drivers/net/ethernet/marvell/mvmdio.c

@@ -42,8 +42,7 @@ struct orion_mdio_dev {
 	void __iomem *smireg;
 };
 
-/*
- * Wait for the SMI unit to be ready for another operation
+/* Wait for the SMI unit to be ready for another operation
  */
 static int orion_mdio_wait_ready(struct mii_bus *bus)
 {