media: renesas: vsp1: Name parameters to entity operations

checkpatch.pl complains when function arguments are not named:

WARNING: function definition argument 'struct vsp1_entity *' should also have an identifier name
+       void (*configure_stream)(struct vsp1_entity *,

In preparation for reworking some of the vsp1_entity_operations
functions, fix the warnings for the existing ones.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi+renesas@ideasonboard.com>