drm/nouveau: correct INIT_DP_CONDITION subcondition 5

Fixes DP output on a GTX 465 board I have.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_bios.c

@@ -1222,7 +1222,7 @@ init_dp_condition(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
 			return 3;
 		}
 
-		if (cond & 1)
+		if (!(cond & 1))
 			iexec->execute = false;
 	}
 		break;