backport the ssb dma device change to 2.6.30 as well

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21798 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/generic-2.6/patches-2.6.30/942-ssb_add_dma_dev.patch

@@ -0,0 +1,29 @@
+--- a/drivers/ssb/main.c
++++ b/drivers/ssb/main.c
+@@ -465,6 +465,7 @@ static int ssb_devices_register(struct s
+ #ifdef CONFIG_SSB_PCIHOST
+ 			sdev->irq = bus->host_pci->irq;
+ 			dev->parent = &bus->host_pci->dev;
++			sdev->dma_dev = dev->parent;
+ #endif
+ 			break;
+ 		case SSB_BUSTYPE_PCMCIA:
+@@ -475,6 +476,7 @@ static int ssb_devices_register(struct s
+ 			break;
+ 		case SSB_BUSTYPE_SSB:
+ 			dev->dma_mask = &dev->coherent_dma_mask;
++			sdev->dma_dev = dev;
+ 			break;
+ 		default:
+ 			break;
+--- a/include/linux/ssb/ssb.h
++++ b/include/linux/ssb/ssb.h
+@@ -167,7 +167,7 @@ struct ssb_device {
+ 	 * is an optimization. */
+ 	const struct ssb_bus_ops *ops;
+ 
+-	struct device *dev;
++	struct device *dev, *dma_dev;
+ 
+ 	struct ssb_bus *bus;
+ 	struct ssb_device_id id;