[ARM] ecard: add ecardm_iomap() / ecardm_iounmap()

Add devres ecardm_iomap() and ecardm_iounmap() for Acorn expansion
cards.  Convert all expansion card drivers to use them.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/ide/arm/rapide.c b/drivers/ide/arm/rapide.c
index 890ea3f..83811af 100644
--- a/drivers/ide/arm/rapide.c
+++ b/drivers/ide/arm/rapide.c
@@ -63,8 +63,7 @@
 	if (ret)
 		goto out;
 
-	base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
-		       ecard_resource_len(ec, ECARD_RES_MEMC));
+	base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
 	if (!base) {
 		ret = -ENOMEM;
 		goto release;
@@ -81,7 +80,6 @@
 		goto out;
 	}
 
-	iounmap(base);
  release:
 	ecard_release_resources(ec);
  out:
@@ -96,7 +94,6 @@
 
 	/* there must be a better way */
 	ide_unregister(hwif - ide_hwifs);
-	iounmap(hwif->hwif_data);
 	ecard_release_resources(ec);
 }