pinctrl: zynqmp: Add pinctrl driver

Add pinctrl driver for Xilinx ZynqMP SOC. This driver is compatible with
linux device tree parameters for configuring pinmux and pinconf.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/2d7eefa83c8c0129f7243a25de56a289e948f6c6.1645626183.git.michal.simek@xilinx.com

include/zynqmp_firmware.h

@@ -177,6 +177,49 @@ enum pm_query_id {
 	PM_QID_CLOCK_GET_MAX_DIVISOR = 13,
 };
 
+enum pm_pinctrl_config_param {
+	PM_PINCTRL_CONFIG_SLEW_RATE = 0,
+	PM_PINCTRL_CONFIG_BIAS_STATUS = 1,
+	PM_PINCTRL_CONFIG_PULL_CTRL = 2,
+	PM_PINCTRL_CONFIG_SCHMITT_CMOS = 3,
+	PM_PINCTRL_CONFIG_DRIVE_STRENGTH = 4,
+	PM_PINCTRL_CONFIG_VOLTAGE_STATUS = 5,
+	PM_PINCTRL_CONFIG_TRI_STATE = 6,
+	PM_PINCTRL_CONFIG_MAX = 7,
+};
+
+enum pm_pinctrl_slew_rate {
+	PM_PINCTRL_SLEW_RATE_FAST = 0,
+	PM_PINCTRL_SLEW_RATE_SLOW = 1,
+};
+
+enum pm_pinctrl_bias_status {
+	PM_PINCTRL_BIAS_DISABLE = 0,
+	PM_PINCTRL_BIAS_ENABLE = 1,
+};
+
+enum pm_pinctrl_pull_ctrl {
+	PM_PINCTRL_BIAS_PULL_DOWN = 0,
+	PM_PINCTRL_BIAS_PULL_UP = 1,
+};
+
+enum pm_pinctrl_schmitt_cmos {
+	PM_PINCTRL_INPUT_TYPE_CMOS = 0,
+	PM_PINCTRL_INPUT_TYPE_SCHMITT = 1,
+};
+
+enum pm_pinctrl_drive_strength {
+	PM_PINCTRL_DRIVE_STRENGTH_2MA = 0,
+	PM_PINCTRL_DRIVE_STRENGTH_4MA = 1,
+	PM_PINCTRL_DRIVE_STRENGTH_8MA = 2,
+	PM_PINCTRL_DRIVE_STRENGTH_12MA = 3,
+};
+
+enum pm_pinctrl_tri_state {
+	PM_PINCTRL_TRI_STATE_DISABLE = 0,
+	PM_PINCTRL_TRI_STATE_ENABLE = 1,
+};
+
 enum zynqmp_pm_reset_action {
 	PM_RESET_ACTION_RELEASE = 0,
 	PM_RESET_ACTION_ASSERT = 1,