lcd, mpc8xx: move the mpc8xx driver to drivers/video

Since the lcd code was compiled unconditionally in arch also
add CONFIG_MPC8XX_LCD to the boards using this driver.

cc: Anatolij Gustschin <agust@denx.de>
cc: Wolfgang Denk <wd@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
diff --git a/include/configs/RPXlite_DW.h b/include/configs/RPXlite_DW.h
index 67ab1e9..d8e28d5 100644
--- a/include/configs/RPXlite_DW.h
+++ b/include/configs/RPXlite_DW.h
@@ -54,6 +54,7 @@
 #define	CONFIG_SYS_TEXT_BASE	0xff000000
 
 #ifdef	CONFIG_LCD			/* with LCD controller ?	*/
+#define CONFIG_MPC8XX_LCD
 #define CONFIG_SPLASH_SCREEN		/* ... with splashscreen support*/
 #endif