dm: video: Add a temporary work-around for old stdout var

Boards with a saved environment may use 'lcd' in their stdout environment
variable, expecting that this will enable output to the LCD. When the board
moves to use driver model for video, this will no-longer work. Add a
work-around to fix this. A warning messages is printed, and we will remove
the work-around at the end of 2016.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Stephen Warren <swarren@nvidia.com>
diff --git a/common/console.c b/common/console.c
index b3f5fdc..6a0d11b 100644
--- a/common/console.c
+++ b/common/console.c
@@ -650,6 +650,10 @@
 	struct stdio_dev *dev;
 
 	dev = stdio_get_by_name(name);
+#ifdef CONFIG_VIDCONSOLE_AS_LCD
+	if (!dev && !strcmp(name, "lcd"))
+		dev = stdio_get_by_name("vidconsole");
+#endif
 
 	if (dev && (dev->flags & flags))
 		return dev;
@@ -795,6 +799,10 @@
 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
 	stdio_print_current_devices();
 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
+#ifdef CONFIG_VIDCONSOLE_AS_LCD
+	if (strstr(stdoutname, "lcd"))
+		printf("Warning: Please change 'lcd' to 'vidconsole' in stdout/stderr environment vars\n");
+#endif
 
 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
 	/* set the environment variables (will overwrite previous env settings) */