net: mvpp2: typo and cosmetic fixes

This patch on the Marvell PPv2 driver is only cosmetic. Two typos are
removed as well as other cosmetic fixes, such as extra new lines or tabs
vs spaces.

Suggested-by: Stefan Chulski <stefanc@marvell.com>
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>