Rename run_command2() to run_command()

This is a more sensible name, so rename it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/common.h b/include/common.h
index dd1b9ed..e8b62a9 100644
--- a/include/common.h
+++ b/include/common.h
@@ -261,7 +261,7 @@
 /* common/main.c */
 void	main_loop	(void);
 int builtin_run_command(const char *cmd, int flag);
-int run_command2(const char *cmd, int flag);
+int run_command(const char *cmd, int flag);
 int	readline	(const char *const prompt);
 int	readline_into_buffer(const char *const prompt, char *buffer,
 			int timeout);