actually add tegra TX2 usb patch

arm64-usb-host-xhci-tegra-set-MODULE_FIRMWARE-for-tegra186.patch

@@ -0,0 +1,36 @@
+From 406d27321583d444cd2067dc1130c1260b072576 Mon Sep 17 00:00:00 2001
+From: Peter Robinson <pbrobinson@gmail.com>
+Date: Mon, 20 Jan 2020 13:48:55 +0000
+Subject: [PATCH] usb: host: xhci-tegra: set MODULE_FIRMWARE for tegra186
+
+Set the MODULE_FIRMWARE for tegra186, it's registered for 124/210 and
+ensures the firmware is available at the appropriate time such as in
+the initrd, else if the firmware is unavailable the driver fails with
+the following errors:
+
+tegra-xusb 3530000.usb: Direct firmware load for nvidia/tegra186/xusb.bin failed with error -2
+tegra-xusb 3530000.usb: failed to request firmware: -2
+tegra-xusb 3530000.usb: failed to load firmware: -2
+tegra-xusb: probe of 3530000.usb failed with error -2
+
+Fixes: 5f9be5f3f899 ("usb: host: xhci-tegra: Add Tegra186 XUSB support")
+Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
+---
+ drivers/usb/host/xhci-tegra.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
+index bf9065438320..7b0d175ad708 100644
+--- a/drivers/usb/host/xhci-tegra.c
++++ b/drivers/usb/host/xhci-tegra.c
+@@ -1432,6 +1432,7 @@ MODULE_FIRMWARE("nvidia/tegra210/xusb.bin");
+ 
+ static const char * const tegra186_supply_names[] = {
+ };
++MODULE_FIRMWARE("nvidia/tegra186/xusb.bin");
+ 
+ static const struct tegra_xusb_phy_type tegra186_phy_types[] = {
+ 	{ .name = "usb3", .num = 3, },
+-- 
+2.24.1
+