dm: part: Rename some partition functions

Rename three partition functions so that they start with part_. This makes
it clear what they relate to.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index b19b328..94afbb1 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1495,7 +1495,7 @@
 	mmc->block_dev.revision[0] = 0;
 #endif
 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
-	init_part(&mmc->block_dev);
+	part_init(&mmc->block_dev);
 #endif
 
 	return 0;