This enables USB on the ARM juno board when booted with
an ACPI kernel. The PNP id comes from the PNP/ACPI registry
and describes a EHCI controller without debug.

Signed-off-by: Jeremy Linton <redacted>
---
 drivers/usb/host/ehci-platform.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index 82e396f..1807baa 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c

@@ -27,6 +27,7 @@
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/acpi.h>

 #include <linux/phy/phy.h>
 #include <linux/platform_device.h>
 #include <linux/reset.h>

@@ -382,6 +383,13 @@ static const struct of_device_id vt8500_ehci_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, vt8500_ehci_ids);
 
+static const struct acpi_device_id ehci_acpi_match[] = {
+	{ "PNP0D20", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, ehci_acpi_match);
+
+

 static const struct platform_device_id ehci_platform_table[] = {
 	{ "ehci-platform", 0 },
 	{ }

@@ -400,6 +408,7 @@ static struct platform_driver ehci_platform_driver = {
 		.name	= "ehci-platform",
 		.pm	= &ehci_platform_pm_ops,
 		.of_match_table = vt8500_ehci_ids,
+		.acpi_match_table = ACPI_PTR(ehci_acpi_match),
 	}
 };