mainboard/intel/icelake_rvp: Do initial mainboard commit

Clone entirely from mainboard/intel/cannonlake_rvp
commit id: af89f49b83

List of changes on top off initial cannonlake_rvp clone
 1. Rename "Cannonlake" with "Icelake".
 2. Replace "cannonlake_rvp" with "icelake_rvp".
 3. Rename "cnl" with "icl".
 4. Remove unwanted SPD file, will add correct SPD with mainboard
    patches.
 5. Remove NHLT related implementation.
 6. Remove FSP configs, will add once FSP headers are available.
 7. Removed smihandler.c, will add later if needed.

Change-Id: I875972d1fb2f630bf5eb29bd955c484e7f9aa415
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Signed-off-by: Aamir Bohra <aamir.bohra@intel.com>
Reviewed-on: https://review.coreboot.org/29164
Reviewed-by: Naresh Solanki <naresh.solanki@intel.com>
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/intel/icelake_rvp/mainboard.c

@@ -0,0 +1,52 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2018 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.
+ */
+
+#include <arch/acpi.h>
+#include <baseboard/variants.h>
+#include <device/device.h>
+#include <soc/gpio.h>
+#include <vendorcode/google/chromeos/chromeos.h>
+#include <variant/gpio.h>
+
+static void mainboard_init(void *chip_info)
+{
+	const struct pad_config *pads;
+	size_t num;
+
+	pads = variant_gpio_table(&num);
+	gpio_configure_pads(pads, num);
+}
+
+static unsigned long mainboard_write_acpi_tables(struct device *device,
+						 unsigned long current,
+						 acpi_rsdp_t *rsdp)
+{
+	uintptr_t start_addr;
+
+	start_addr = current;
+
+	return start_addr;
+}
+
+static void mainboard_enable(struct device *dev)
+{
+	dev->ops->write_acpi_tables = mainboard_write_acpi_tables;
+	dev->ops->acpi_inject_dsdt_generator = chromeos_dsdt_generator;
+}
+
+struct chip_operations mainboard_ops = {
+	.init = mainboard_init,
+	.enable_dev = mainboard_enable,
+};