video: lcd: Add CONFIG_SPLASH_SCREEN_PREPARE support to CONFIG_VIDEO

Create splash.c/h to put the function and any future common splash
screen code in.

Signed-off-by: Robert Winkler <robert.winkler@boundarydevices.com>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
diff --git a/drivers/video/cfb_console.c b/drivers/video/cfb_console.c
index b10f159..785bbcf 100644
--- a/drivers/video/cfb_console.c
+++ b/drivers/video/cfb_console.c
@@ -181,6 +181,8 @@
  */
 #include <video_fb.h>
 
+#include <splash.h>
+
 /*
  * some Macros
  */
@@ -1995,10 +1997,9 @@
 #ifdef CONFIG_SPLASH_SCREEN
 	s = getenv("splashimage");
 	if (s != NULL) {
-
+		splash_screen_prepare();
 		addr = simple_strtoul(s, NULL, 16);
 
-
 		if (video_display_bitmap(addr,
 					video_logo_xpos,
 					video_logo_ypos) == 0) {