Nokia RX-51: Convert to CONFIG_DM_VIDEO

Mechanically convert video_hw_init() function to UCLASS_VIDEO probe
callback and replace CONFIG_CFB_CONSOLE by CONFIG_DM_VIDEO.

As framebuffer base address is setup by the bootloader which loads U-Boot,
set plat->base to that fixed framebuffer address.

This change was tested in qemu n900 machine and is working fine.

What does not work is CONFIG_VIDEO_LOGO, seems to be buggy.

Signed-off-by: Pali Rohár <pali@kernel.org>
diff --git a/include/configs/nokia_rx51.h b/include/configs/nokia_rx51.h
index 9be64c3..e837b12 100644
--- a/include/configs/nokia_rx51.h
+++ b/include/configs/nokia_rx51.h
@@ -70,19 +70,12 @@
 
 #define CONFIG_SYS_ONENAND_BASE		ONENAND_MAP
 
-/*
- * Framebuffer
- */
-/* Video console */
-#define VIDEO_FB_16BPP_PIXEL_SWAP
-#define VIDEO_FB_16BPP_WORD_SWAP
-
 /* Environment information */
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"usbtty=cdc_acm\0" \
 	"stdin=usbtty,serial,keyboard\0" \
-	"stdout=usbtty,serial,vga\0" \
-	"stderr=usbtty,serial,vga\0" \
+	"stdout=usbtty,serial,vidconsole\0" \
+	"stderr=usbtty,serial,vidconsole\0" \
 	"slide=gpio input " __stringify(GPIO_SLIDE) "\0" \
 	"switchmmc=mmc dev ${mmcnum}\0" \
 	"kernaddr=0x82008000\0" \