video: Add a default TrueType font

At present it is possible to enable TrueType support but not include any
fonts. This results in a blank display. Select Nimbus as the default font
to avoid this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/drivers/video/fonts/Kconfig b/drivers/video/fonts/Kconfig
index 3f1398d..c692fa9 100644
--- a/drivers/video/fonts/Kconfig
+++ b/drivers/video/fonts/Kconfig
@@ -7,6 +7,7 @@
 config CONSOLE_TRUETYPE_NIMBUS
 	bool "Nimbus Sans Regular"
 	depends on CONSOLE_TRUETYPE
+	default y
 	help
 	  Nimbus Sans L is a version of Nimbus Sans using Adobe font sources.
 	  It was designed in 1987. A subset of Nimbus Sans L were released