Add cli_ prefix to readline functions

This makes it clear where the code resides.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/ddr/fsl/interactive.c b/drivers/ddr/fsl/interactive.c
index 4e2120f..c9f8630 100644
--- a/drivers/ddr/fsl/interactive.c
+++ b/drivers/ddr/fsl/interactive.c
@@ -1865,11 +1865,12 @@
 		} else {
 			/*
 			 * No need to worry for buffer overflow here in
-			 * this function;  readline() maxes out at CFG_CBSIZE
+			 * this function;  cli_readline() maxes out at
+			 * CFG_CBSIZE
 			 */
-			readline_into_buffer(prompt, buffer, 0);
+			cli_readline_into_buffer(prompt, buffer, 0);
 		}
-		argc = parse_line(buffer, argv);
+		argc = cli_simple_parse_line(buffer, argv);
 		if (argc == 0)
 			continue;