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/block/systemace.c b/drivers/block/systemace.c
index ea18c0d..b921dcd 100644
--- a/drivers/block/systemace.c
+++ b/drivers/block/systemace.c
@@ -124,7 +124,7 @@
 		 */
 		ace_writew(width == 8 ? 0 : 0x0001, 0);
 
-		init_part(&systemace_dev);
+		part_init(&systemace_dev);
 
 	}