[SCSI] bnx2i: Fixed the override of the error_mask module param

The error_mask module param overrides has a bug which prevented
the new module param values to take effect.

Also changed the type attribute of the error_mask1/2 module params
from int to uint to allow the MSB to be set.

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Acked-by: Anil Veerabhadrappa <anilgv@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>