[libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info

The ATA_UDMAx masks are self-documenting, and far better than manually
writing in the hex mask.

Note that pata_it8213 mask differed from the comment.  Added a FIXME there.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c
index 5c53d5a..30c4276 100644
--- a/drivers/ata/pata_ali.c
+++ b/drivers/ata/pata_ali.c
@@ -547,7 +547,7 @@
 		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
 		.pio_mask = 0x1f,
 		.mwdma_mask = 0x07,
-		.udma_mask = 0x1f,
+		.udma_mask = ATA_UDMA4,
 		.port_ops = &ali_c2_port_ops
 	};
 	/* Revision 0xC3 is UDMA66 for now */
@@ -556,7 +556,7 @@
 		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
 		.pio_mask = 0x1f,
 		.mwdma_mask = 0x07,
-		.udma_mask = 0x1f,
+		.udma_mask = ATA_UDMA4,
 		.port_ops = &ali_c2_port_ops
 	};
 	/* Revision 0xC4 is UDMA100 */
@@ -565,7 +565,7 @@
 		.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
 		.pio_mask = 0x1f,
 		.mwdma_mask = 0x07,
-		.udma_mask = 0x3f,
+		.udma_mask = ATA_UDMA5,
 		.port_ops = &ali_c2_port_ops
 	};
 	/* Revision 0xC5 is UDMA133 with LBA48 DMA */
@@ -574,7 +574,7 @@
 		.flags = ATA_FLAG_SLAVE_POSS,
 		.pio_mask = 0x1f,
 		.mwdma_mask = 0x07,
-		.udma_mask = 0x7f,
+		.udma_mask = ATA_UDMA6,
 		.port_ops = &ali_c5_port_ops
 	};