video console: allow font size configuration at runtime

Allow font size configuration at runtime for console_simple.c
driver. This needed for unit testing different fonts.

Configuring is done by `font` command, also used for font
selection in true type console.

Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/console_normal.c b/drivers/video/console_normal.c
index 03e8598..413c7ab 100644
--- a/drivers/video/console_normal.c
+++ b/drivers/video/console_normal.c
@@ -101,6 +101,9 @@
 	.putc_xy	= console_putc_xy,
 	.move_rows	= console_move_rows,
 	.set_row	= console_set_row,
+	.get_font_size	= console_simple_get_font_size,
+	.get_font	= console_simple_get_font,
+	.select_font	= console_simple_select_font,
 };
 
 U_BOOT_DRIVER(vidconsole_normal) = {