Fix line length calculation. var->width is the size of the display in mm. We
like to use the pixel size.

Without this fix, dynamic (fbset) based resolution changes with s3c2410_fb
don't work at all.

Spotted by john cass <johnpcass@yahoo.com>

Signed-off-by: Stefan Schmidt <stefan@openmoko.org>
Signed-off-by: Harald Welte <laforge@openmoko.org>
Index: linux-2.6.22.5-moko/drivers/video/s3c2410fb.c
===================================================================
--- linux-2.6.22.5-moko.orig/drivers/video/s3c2410fb.c
+++ linux-2.6.22.5-moko/drivers/video/s3c2410fb.c
@@ -470,7 +470,7 @@
 			 break;
 	}
 
-	fbi->fb->fix.line_length     = (var->width*var->bits_per_pixel)/8;
+	fbi->fb->fix.line_length     = (var->xres_virtual*var->bits_per_pixel)/8;
 
 	/* activate this new configuration */