dm: blk: Rename get_dev() to blk_get_dev()

The current name is too generic. Add a 'blk_' prefix to aid searching and
make its purpose clearer.

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/gpt.c b/cmd/gpt.c
index 881367c..8ffaef3 100644
--- a/cmd/gpt.c
+++ b/cmd/gpt.c
@@ -418,7 +418,7 @@
 		printf("'%s' is not a number\n", argv[3]);
 		return CMD_RET_USAGE;
 	}
-	blk_dev_desc = get_dev(argv[2], dev);
+	blk_dev_desc = blk_get_dev(argv[2], dev);
 	if (!blk_dev_desc) {
 		printf("%s: %s dev %d NOT available\n",
 		       __func__, argv[2], dev);