drm/radeon/kms: fix a spelling error in an error message

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>

drivers/gpu/drm/radeon/r100.c

@@ -3522,7 +3522,7 @@ int r100_ring_test(struct radeon_device *rdev)
 	if (i < rdev->usec_timeout) {
 		DRM_INFO("ring test succeeded in %d usecs\n", i);
 	} else {
-		DRM_ERROR("radeon: ring test failed (sracth(0x%04X)=0x%08X)\n",
+		DRM_ERROR("radeon: ring test failed (scratch(0x%04X)=0x%08X)\n",
 			  scratch, tmp);
 		r = -EINVAL;
 	}