dt-bindings: pinctrl: add ns3 pads definition

Add NS3 pads definitions.
Signed-off-by: NRayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

include/dt-bindings/pinctrl/brcm,pinctrl-ns3.h

+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2020 Broadcom.
+ */
+
+#ifndef __DT_BINDINGS_PINCTRL_BRCM_STINGRAY_H__
+#define __DT_BINDINGS_PINCTRL_BRCM_STINGRAY_H__
+
+/* Alternate functions available in MUX controller */
+#define MODE_NITRO				0
+#define MODE_NAND				1
+#define MODE_PNOR				2
+#define MODE_GPIO				3
+
+/* Pad configuration attribute */
+#define PAD_SLEW_RATE_ENA			BIT(0)
+#define PAD_SLEW_RATE_ENA_MASK			BIT(0)
+
+#define PAD_DRIVE_STRENGTH_2_MA			(0 << 1)
+#define PAD_DRIVE_STRENGTH_4_MA			BIT(1)
+#define PAD_DRIVE_STRENGTH_6_MA			(2 << 1)
+#define PAD_DRIVE_STRENGTH_8_MA			(3 << 1)
+#define PAD_DRIVE_STRENGTH_10_MA		(4 << 1)
+#define PAD_DRIVE_STRENGTH_12_MA		(5 << 1)
+#define PAD_DRIVE_STRENGTH_14_MA		(6 << 1)
+#define PAD_DRIVE_STRENGTH_16_MA		(7 << 1)
+#define PAD_DRIVE_STRENGTH_MASK			(7 << 1)
+
+#define PAD_PULL_UP_ENA				BIT(4)
+#define PAD_PULL_UP_ENA_MASK			BIT(4)
+
+#define PAD_PULL_DOWN_ENA			BIT(5)
+#define PAD_PULL_DOWN_ENA_MASK			BIT(5)
+
+#define PAD_INPUT_PATH_DIS			BIT(6)
+#define PAD_INPUT_PATH_DIS_MASK			BIT(6)
+
+#define PAD_HYSTERESIS_ENA			BIT(7)
+#define PAD_HYSTERESIS_ENA_MASK			BIT(7)
+
+#endif