Bug#825840: Possible fix for colour invertion on ATY,Rockhopper2

[lsorense@csclub.uwaterloo.ca (Lennart Sorensen)]

Well it seems ATY,Rockhopper2 (not Rockhopper) in the Mac Mini is in fact 
a Radeon, and the way the radeonfb driver handles the pallete appears
to match the cmap_radeon in offb, so perhaps this would work in offb.c

--- a/drivers/video/fbdev/offb.c
+++ b/drivers/video/fbdev/offb.c
@@ -333,7 +333,7 @@
 		par->cmap_adr = offb_map_reg(dp, 2, 0, 0x1fff);
 		if (par->cmap_adr)
 			par->cmap_type = cmap_M3B;
-	} else if (dp && !strncmp(name, "ATY,Rage6", 9)) {
+	} else if (dp && (!strncmp(name, "ATY,Rage6", 9)) || !strncmp(name, "ATY,Rockhopper2", 15)) {
 		par->cmap_adr = offb_map_reg(dp, 1, 0, 0x1fff);
 		if (par->cmap_adr)
 			par->cmap_type = cmap_radeon;

-- 
Len Sorensen