usb: misc: usb3503: Add USB3503A to the compatible list

There are no software visible differences that I am aware of but in case
any are discovered allow the DTS to specify exactly which device is
present.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/usb/usb3503.txt

diff --git a/Documentation/devicetree/bindings/usb/usb3503.txt b/Documentation/devicetree/bindings/usb/usb3503.txt
index 8c5be48..cd60f7e 100644
--- a/Documentation/devicetree/bindings/usb/usb3503.txt
+++ b/Documentation/devicetree/bindings/usb/usb3503.txt
@@ -1,7 +1,7 @@
 SMSC USB3503 High-Speed Hub Controller
 
 Required properties:
-- compatible: Should be "smsc,usb3503".
+- compatible: Should be "smsc,usb3503" or "smsc,usb3503a".
 - reg: Specifies the i2c slave address, it should be 0x08.
 - connect-gpios: Should specify GPIO for connect.
 - disabled-ports: Should specify the ports unused.

drivers/usb/misc/usb3503.c

diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c
index 8f5dff2..da45ed9 100644
--- a/drivers/usb/misc/usb3503.c
+++ b/drivers/usb/misc/usb3503.c
@@ -272,6 +272,7 @@
 #ifdef CONFIG_OF
 static const struct of_device_id usb3503_of_match[] = {
 	{ .compatible = "smsc,usb3503", },
+	{ .compatible = "smsc,usb3503a", },
 	{},
 };
 MODULE_DEVICE_TABLE(of, usb3503_of_match);