[libata] More PATA driver ->cable_detect support

Roll-up of ->cable_detect feature addition patches, authored and
signed-off-by Alan Cox.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/pata_isapnp.c b/drivers/ata/pata_isapnp.c
index 1a61cc8..2580ab3 100644
--- a/drivers/ata/pata_isapnp.c
+++ b/drivers/ata/pata_isapnp.c
@@ -49,6 +49,7 @@
 	.thaw		= ata_bmdma_thaw,
 	.error_handler	= ata_bmdma_error_handler,
 	.post_internal_cmd = ata_bmdma_post_internal_cmd,
+	.cable_detect	= ata_cable_40wire,
 
 	.qc_prep 	= ata_qc_prep,
 	.qc_issue	= ata_qc_issue_prot,