staging: nvec: specify a platform-device base id

commit 6e3f62f079 (mfd: core: Fix platform-device id generation) modified
the computation of the mfd cell id. Negative numbers forbit the specification
of cell ids as we do. Fix this for now by specifying a base of 0 instead. In
the long run, this may be changed to automatic cell ids (base -2).

Reported-by: Misha Komarovskiy <zombah@gmail.com>
Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c
index 2637059..5868ebb 100644
--- a/drivers/staging/nvec/nvec.c
+++ b/drivers/staging/nvec/nvec.c
@@ -85,23 +85,20 @@
 static const struct mfd_cell nvec_devices[] = {
 	{
 		.name = "nvec-kbd",
-		.id = 1,
 	},
 	{
 		.name = "nvec-mouse",
-		.id = 1,
+	},
+	{
+		.name = "nvec-power",
+		.id = 0,
 	},
 	{
 		.name = "nvec-power",
 		.id = 1,
 	},
 	{
-		.name = "nvec-power",
-		.id = 2,
-	},
-	{
 		.name = "nvec-paz00",
-		.id = 1,
 	},
 };
 
@@ -891,7 +888,7 @@
 		nvec_msg_free(nvec, msg);
 	}
 
-	ret = mfd_add_devices(nvec->dev, -1, nvec_devices,
+	ret = mfd_add_devices(nvec->dev, 0, nvec_devices,
 			      ARRAY_SIZE(nvec_devices), NULL, 0, NULL);
 	if (ret)
 		dev_err(nvec->dev, "error adding subdevices\n");