[][MT79xx add USBIF compliance toolkit]

[Description]
Add USBIF compliance toolkit for MT79xx
usb3hqa
RG_USB20_INTR_EN
RG_UsB20_VRT_VREF_SEL
RG_USB20_TERM_VREF_SEL
RG_USB20_HSTX_SRCTRL
RG_USB20_DISCTH
RG_CHGDT_EN

[Release-log]
N/A

Change-Id: I2f7e4bdf27c2197a198ce10af3a09c362adfc04a
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5351515
diff --git a/target/linux/mediatek/files-5.4/drivers/usb/host/unusual-statement.h b/target/linux/mediatek/files-5.4/drivers/usb/host/unusual-statement.h
new file mode 100644
index 0000000..b929342
--- /dev/null
+++ b/target/linux/mediatek/files-5.4/drivers/usb/host/unusual-statement.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * xhci-mtk-unusuallib.h -- xhci toolkit header file
+ *
+ * Copyright (C) 2021 Mediatek Inc - http://www.mediatek.com
+ *
+ * Author: Zhanyong Wang <zhanyong.wang@mediatek.com>
+ */
+
+UNUSUAL_DEVICE_ATTR(RG_USB20_INTR_EN),
+UNUSUAL_DEVICE_ATTR(RG_USB20_VRT_VREF_SEL),
+UNUSUAL_DEVICE_ATTR(RG_USB20_TERM_VREF_SEL),
+UNUSUAL_DEVICE_ATTR(RG_USB20_HSTX_SRCTRL),
+UNUSUAL_DEVICE_ATTR(RG_USB20_DISCTH),
+UNUSUAL_DEVICE_ATTR(RG_CHGDT_EN),
+