drivers/i2c/max98373: Add driver for generating device in SSDT

Add a device driver to generate the device and required properties
into the SSDT for max98373.

TEST=verified SSDT contained relevant params
BUG=None

Change-Id: Id45f74e52855f4b19276e1d3d673d5448207ef4b
Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Signed-off-by: N, Harshapriya <harshapriya.n@intel.com>
Reviewed-on: https://review.coreboot.org/22673
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/drivers/i2c/max98373/chip.h

@@ -0,0 +1,34 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2017 Intel Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+/*
+ * Maxim MAX98373 audio codec devicetree bindings
+ */
+struct drivers_i2c_max98373_config {
+	/* I2C Bus Frequency in Hertz (default 400kHz) */
+	uint32_t bus_speed;
+	/* Set ‘1’ if I2S channel size is not 32bit. */
+	bool interleave_mode;
+	/* Identifier for chips */
+	uint32_t uid;
+	/* Device Description */
+	const char *desc;
+	/* ACPI Device Name */
+	const char *name;
+	/* slot number where voltage feedback will be received */
+	uint32_t vmon_slot_no;
+	/* slot number where current feedback will be received */
+	uint32_t imon_slot_no;
+};