msm: kgsl: return correct error code for unknown ioctls

Unknown ioctl code errors are supposed to be ENOIOCTLCMD,
not EINVAL.

Change-Id: Id38529e4ec70d63091a9273a780585aea6ae9d9a
Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>
diff --git a/drivers/gpu/msm/adreno.c b/drivers/gpu/msm/adreno.c
index e33155f..ea16c31 100644
--- a/drivers/gpu/msm/adreno.c
+++ b/drivers/gpu/msm/adreno.c
@@ -1274,7 +1274,7 @@
 	default:
 		KGSL_DRV_INFO(dev_priv->device,
 			"invalid ioctl code %08x\n", cmd);
-		result = -EINVAL;
+		result = -ENOIOCTLCMD;
 		break;
 	}
 	return result;
diff --git a/drivers/gpu/msm/kgsl.c b/drivers/gpu/msm/kgsl.c
index 45007da..cbdf902 100644
--- a/drivers/gpu/msm/kgsl.c
+++ b/drivers/gpu/msm/kgsl.c
@@ -1964,7 +1964,7 @@
 		if (!func) {
 			KGSL_DRV_INFO(dev_priv->device,
 				      "invalid ioctl code %08x\n", cmd);
-			ret = -EINVAL;
+			ret = -ENOIOCTLCMD;
 			goto done;
 		}
 		lock = 1;