blk: Rename if_type to uclass_id

Use the word 'uclass' instead of 'if_type' to complete the conversion.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/mmc.c b/cmd/mmc.c
index 0f1f4e0..c79d940 100644
--- a/cmd/mmc.c
+++ b/cmd/mmc.c
@@ -154,7 +154,7 @@
 
 #ifdef CONFIG_BLOCK_CACHE
 	struct blk_desc *bd = mmc_get_blk_desc(mmc);
-	blkcache_invalidate(bd->if_type, bd->devnum);
+	blkcache_invalidate(bd->uclass_id, bd->devnum);
 #endif
 
 	return mmc;
@@ -530,7 +530,7 @@
 	if (!mmc)
 		return CMD_RET_FAILURE;
 
-	mmc_dev = blk_get_devnum_by_type(UCLASS_MMC, curr_device);
+	mmc_dev = blk_get_devnum_by_uclass_id(UCLASS_MMC, curr_device);
 	if (mmc_dev != NULL && mmc_dev->type != DEV_TYPE_UNKNOWN) {
 		part_print(mmc_dev);
 		return CMD_RET_SUCCESS;