x86: Add definitions for the x86-efi board and plumb it in

Add configuration and Kconfig changes for this board.

Signed-off-by: Ben Stoltz <stoltz@google.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

configs/efi-x86_defconfig

@@ -0,0 +1,16 @@
+CONFIG_X86=y
+CONFIG_VENDOR_EFI=y
+CONFIG_TARGET_EFI=y
+CONFIG_TSC_CALIBRATION_BYPASS=y
+CONFIG_OF_CONTROL=y
+CONFIG_OF_EMBED=y
+CONFIG_DM_PCI=y
+CONFIG_DEFAULT_DEVICE_TREE="efi"
+CONFIG_EFI=y
+CONFIG_EFI_APP=y
+CONFIG_DEBUG_UART=y
+CONFIG_DEBUG_EFI_CONSOLE=y
+CONFIG_DEBUG_UART_BASE=0
+CONFIG_DEBUG_UART_CLOCK=0
+# CONFIG_CMD_NET is not set
+# CONFIG_CMD_BOOTM is not set

include/configs/efi-x86.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <configs/x86-common.h>
+
+#undef CONFIG_CMD_SF_TEST
+
+#undef CONFIG_TPM
+#undef CONFIG_TPM_TIS_LPC
+#undef CONFIG_TPM_TIS_BASE_ADDRESS
+
+#undef CONFIG_CMD_IMLS
+
+#undef CONFIG_SYS_NS16550
+#undef CONFIG_X86_SERIAL
+#undef CONFIG_ENV_IS_IN_SPI_FLASH
+#define CONFIG_ENV_IS_NOWHERE
+#undef CONFIG_VIDEO
+#undef CONFIG_CFB_CONSOLE
+#undef CONFIG_SCSI_AHCI
+#undef CONFIG_CMD_SCSI
+#undef CONFIG_INTEL_ICH6_GPIO
+
+#define CONFIG_STD_DEVICES_SETTINGS     "stdin=usbkbd,vga,serial\0" \
+					"stdout=vga,serial\0" \
+					"stderr=vga,serial\0"
+
+#endif