x86: qemu: efi: Add two boards for EFI 32-bit and 64-bit payload

This introduces two board defconfig files for generating EFI 32-bit
and 64-bit payloads, to run on QEMU x86 target.

With these in place, hopefully buildman will catch any build error
with EFI payload support on x86.
Signed-off-by: NBin Meng <bmeng.cn@gmail.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

board/emulation/qemu-x86/MAINTAINERS

@@ -4,3 +4,5 @@ S:	Maintained
 F:	board/emulation/qemu-x86/
 F:	include/configs/qemu-x86.h
 F:	configs/qemu-x86_defconfig
+F:	configs/qemu-x86_efi_payload32_defconfig
+F:	configs/qemu-x86_efi_payload64_defconfig

configs/qemu-x86_efi_payload32_defconfig

+CONFIG_X86=y
+CONFIG_DEFAULT_DEVICE_TREE="qemu-x86_i440fx"
+CONFIG_SMP=y
+CONFIG_MAX_CPUS=2
+CONFIG_FIT=y
+CONFIG_BOOTSTAGE=y
+CONFIG_BOOTSTAGE_REPORT=y
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_CPU=y
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_FLASH is not set
+CONFIG_CMD_SF=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_USB=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_DHCP=y
+# CONFIG_CMD_NFS is not set
+CONFIG_CMD_PING=y
+CONFIG_CMD_TIME=y
+CONFIG_CMD_QFW=y
+CONFIG_CMD_BOOTSTAGE=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_OF_CONTROL=y
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+CONFIG_CPU=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_DM_ETH=y
+CONFIG_E1000=y
+CONFIG_DM_PCI=y
+CONFIG_DM_RTC=y
+CONFIG_SYS_NS16550=y
+CONFIG_TIMER=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_VIDEO_VESA=y
+CONFIG_FRAMEBUFFER_SET_VESA_MODE=y
+CONFIG_FRAMEBUFFER_VESA_MODE_111=y
+CONFIG_USE_PRIVATE_LIBGCC=y
+CONFIG_EFI=y
+CONFIG_EFI_STUB=y

configs/qemu-x86_efi_payload64_defconfig

+CONFIG_X86=y
+CONFIG_DEFAULT_DEVICE_TREE="qemu-x86_i440fx"
+CONFIG_SMP=y
+CONFIG_MAX_CPUS=2
+CONFIG_FIT=y
+CONFIG_BOOTSTAGE=y
+CONFIG_BOOTSTAGE_REPORT=y
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_CPU=y
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_FLASH is not set
+CONFIG_CMD_SF=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_USB=y
+# CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_DHCP=y
+# CONFIG_CMD_NFS is not set
+CONFIG_CMD_PING=y
+CONFIG_CMD_TIME=y
+CONFIG_CMD_QFW=y
+CONFIG_CMD_BOOTSTAGE=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_OF_CONTROL=y
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+CONFIG_CPU=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_DM_ETH=y
+CONFIG_E1000=y
+CONFIG_DM_PCI=y
+CONFIG_DM_RTC=y
+CONFIG_SYS_NS16550=y
+CONFIG_TIMER=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_VIDEO_VESA=y
+CONFIG_FRAMEBUFFER_SET_VESA_MODE=y
+CONFIG_FRAMEBUFFER_VESA_MODE_111=y
+CONFIG_USE_PRIVATE_LIBGCC=y
+CONFIG_EFI=y
+CONFIG_EFI_STUB=y
+CONFIG_EFI_STUB_64BIT=y