video: Support showing the U-Boot logo

Show the U-Boot logo by default. This is only 7KB in size so seems like
a useful default for boards that enable a display.

If SPLASH_SCREEN is enabled, it is not enabled by default, so as not to
conflict with that feature.

Also disable it for tests, since we don't want to complicate the output.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 7a73ecc..e601b47 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -17,6 +17,7 @@
 config VIDEO_LOGO
 	bool "Show the U-Boot logo on the display"
 	depends on DM_VIDEO
+	select VIDEO_BMP_RLE8
 	help
 	  This enables showing the U-Boot logo on the display when a video
 	  device is probed. It appears at the top right. The logo itself is at