dm: Drop the block_dev_desc_t typedef

Use 'struct' instead of a typdef. Also since 'struct block_dev_desc' is long
and causes 80-column violations, rename it to struct blk_desc.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
diff --git a/drivers/block/dwc_ahsata.c b/drivers/block/dwc_ahsata.c
index bc072f3..6ec52a9 100644
--- a/drivers/block/dwc_ahsata.c
+++ b/drivers/block/dwc_ahsata.c
@@ -620,7 +620,7 @@
 
 static void dwc_ahsata_print_info(int dev)
 {
-	block_dev_desc_t *pdev = &(sata_dev_desc[dev]);
+	struct blk_desc *pdev = &(sata_dev_desc[dev]);
 
 	printf("SATA Device Info:\n\r");
 #ifdef CONFIG_SYS_64BIT_LBA
@@ -956,7 +956,7 @@
 	struct ahci_probe_ent *probe_ent =
 		(struct ahci_probe_ent *)sata_dev_desc[dev].priv;
 	u8 port = probe_ent->hard_port_no;
-	block_dev_desc_t *pdev = &(sata_dev_desc[dev]);
+	struct blk_desc *pdev = &(sata_dev_desc[dev]);
 
 	id = (u16 *)memalign(ARCH_DMA_MINALIGN,
 				roundup(ARCH_DMA_MINALIGN,
diff --git a/drivers/block/sandbox.c b/drivers/block/sandbox.c
index 170f0fa..dd21400 100644
--- a/drivers/block/sandbox.c
+++ b/drivers/block/sandbox.c
@@ -22,7 +22,7 @@
 	return NULL;
 }
 
-static unsigned long host_block_read(block_dev_desc_t *block_dev,
+static unsigned long host_block_read(struct blk_desc *block_dev,
 				     unsigned long start, lbaint_t blkcnt,
 				     void *buffer)
 {
@@ -44,7 +44,7 @@
 	return -1;
 }
 
-static unsigned long host_block_write(block_dev_desc_t *block_dev,
+static unsigned long host_block_write(struct blk_desc *block_dev,
 				      unsigned long start, lbaint_t blkcnt,
 				      const void *buffer)
 {
@@ -89,7 +89,7 @@
 		return 1;
 	}
 
-	block_dev_desc_t *blk_dev = &host_dev->blk_dev;
+	struct blk_desc *blk_dev = &host_dev->blk_dev;
 	blk_dev->if_type = IF_TYPE_HOST;
 	blk_dev->priv = host_dev;
 	blk_dev->blksz = 512;
@@ -103,7 +103,7 @@
 	return 0;
 }
 
-int host_get_dev_err(int dev, block_dev_desc_t **blk_devp)
+int host_get_dev_err(int dev, struct blk_desc **blk_devp)
 {
 	struct host_block_dev *host_dev = find_host_device(dev);
 
@@ -117,9 +117,9 @@
 	return 0;
 }
 
-block_dev_desc_t *host_get_dev(int dev)
+struct blk_desc *host_get_dev(int dev)
 {
-	block_dev_desc_t *blk_dev;
+	struct blk_desc *blk_dev;
 
 	if (host_get_dev_err(dev, &blk_dev))
 		return NULL;
diff --git a/drivers/block/systemace.c b/drivers/block/systemace.c
index b974e80..ea18c0d 100644
--- a/drivers/block/systemace.c
+++ b/drivers/block/systemace.c
@@ -69,11 +69,11 @@
 	return in16(base + off);
 }
 
-static unsigned long systemace_read(block_dev_desc_t *block_dev,
+static unsigned long systemace_read(struct blk_desc *block_dev,
 				    unsigned long start, lbaint_t blkcnt,
 				    void *buffer);
 
-static block_dev_desc_t systemace_dev = { 0 };
+static struct blk_desc systemace_dev = { 0 };
 
 static int get_cf_lock(void)
 {
@@ -105,7 +105,7 @@
 }
 
 #ifdef CONFIG_PARTITIONS
-block_dev_desc_t *systemace_get_dev(int dev)
+struct blk_desc *systemace_get_dev(int dev)
 {
 	/* The first time through this, the systemace_dev object is
 	   not yet initialized. In that case, fill it in. */
@@ -137,7 +137,7 @@
  * the dev_desc) to read blocks of data. The return value is the
  * number of blocks read. A zero return indicates an error.
  */
-static unsigned long systemace_read(block_dev_desc_t *block_dev,
+static unsigned long systemace_read(struct blk_desc *block_dev,
 				    unsigned long start, lbaint_t blkcnt,
 				    void *buffer)
 {