drm/radeon/kms: R600/RV770 remove dead code and print message for wrong BIOS

R600 & RV770 family are all using atombios so remove dead code and
print an error message if we fail to find a valid atombios.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index e74e7a7..9f7eb08 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1476,11 +1476,7 @@
 		/* FIXME: what do we want to do here ? */
 	}
 	/* post card */
-	if (rdev->is_atom_bios) {
-		atom_asic_init(rdev->mode_info.atom_context);
-	} else {
-		radeon_combios_asic_init(rdev->ddev);
-	}
+	atom_asic_init(rdev->mode_info.atom_context);
 	/* Initialize clocks */
 	r = radeon_clocks_init(rdev);
 	if (r) {
@@ -1539,8 +1535,10 @@
 			return -EINVAL;
 	}
 	/* Must be an ATOMBIOS */
-	if (!rdev->is_atom_bios)
+	if (!rdev->is_atom_bios) {
+		dev_err(rdev->dev, "Expecting atombios for R600 GPU\n");
 		return -EINVAL;
+	}
 	r = radeon_atombios_init(rdev);
 	if (r)
 		return r;
@@ -1644,10 +1642,7 @@
 		radeon_agp_fini(rdev);
 #endif
 	radeon_object_fini(rdev);
-	if (rdev->is_atom_bios)
-		radeon_atombios_fini(rdev);
-	else
-		radeon_combios_fini(rdev);
+	radeon_atombios_fini(rdev);
 	kfree(rdev->bios);
 	rdev->bios = NULL;
 	radeon_dummy_page_fini(rdev);