part: Drop disk_partition_t typedef

We should not be using typedefs and these make it harder to use
forward declarations (to reduce header file inclusions). Drop the typedef.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/btrfs.h b/include/btrfs.h
index 5be61e3..f7f82ad 100644
--- a/include/btrfs.h
+++ b/include/btrfs.h
@@ -8,7 +8,8 @@
 #ifndef __U_BOOT_BTRFS_H__
 #define __U_BOOT_BTRFS_H__
 
-int btrfs_probe(struct blk_desc *, disk_partition_t *);
+int btrfs_probe(struct blk_desc *fs_dev_desc,
+		struct disk_partition *fs_partition);
 int btrfs_ls(const char *);
 int btrfs_exists(const char *);
 int btrfs_size(const char *, loff_t *);