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/cmd/sata.c b/cmd/sata.c
index 76bacea..a1faf2d 100644
--- a/cmd/sata.c
+++ b/cmd/sata.c
@@ -16,15 +16,15 @@
 #include <sata.h>
 
 static int sata_curr_device = -1;
-block_dev_desc_t sata_dev_desc[CONFIG_SYS_SATA_MAX_DEVICE];
+struct blk_desc sata_dev_desc[CONFIG_SYS_SATA_MAX_DEVICE];
 
-static unsigned long sata_bread(block_dev_desc_t *block_dev, lbaint_t start,
+static unsigned long sata_bread(struct blk_desc *block_dev, lbaint_t start,
 				lbaint_t blkcnt, void *dst)
 {
 	return sata_read(block_dev->dev, start, blkcnt, dst);
 }
 
-static unsigned long sata_bwrite(block_dev_desc_t *block_dev, lbaint_t start,
+static unsigned long sata_bwrite(struct blk_desc *block_dev, lbaint_t start,
 				 lbaint_t blkcnt, const void *buffer)
 {
 	return sata_write(block_dev->dev, start, blkcnt, buffer);
@@ -36,7 +36,7 @@
 	int i;
 
 	for (i = 0; i < CONFIG_SYS_SATA_MAX_DEVICE; i++) {
-		memset(&sata_dev_desc[i], 0, sizeof(struct block_dev_desc));
+		memset(&sata_dev_desc[i], 0, sizeof(struct blk_desc));
 		sata_dev_desc[i].if_type = IF_TYPE_SATA;
 		sata_dev_desc[i].dev = i;
 		sata_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
@@ -75,7 +75,7 @@
 int sata_stop(void) __attribute__((weak, alias("__sata_stop")));
 
 #ifdef CONFIG_PARTITIONS
-block_dev_desc_t *sata_get_dev(int dev)
+struct blk_desc *sata_get_dev(int dev)
 {
 	return (dev < CONFIG_SYS_SATA_MAX_DEVICE) ? &sata_dev_desc[dev] : NULL;
 }