sparc video: remove open boot prom code

Replace remaining open boot prom code with of.

Boot tested on sparc32 and compile tested on sparc64.

Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/video/sunxvr2500.c b/drivers/video/sunxvr2500.c
index c3869a9..b1dde09 100644
--- a/drivers/video/sunxvr2500.c
+++ b/drivers/video/sunxvr2500.c
@@ -9,10 +9,9 @@
 #include <linux/fb.h>
 #include <linux/pci.h>
 #include <linux/init.h>
+#include <linux/of_device.h>
 
 #include <asm/io.h>
-#include <asm/prom.h>
-#include <asm/of_device.h>
 
 struct s3d_info {
 	struct fb_info		*info;