Add support for qemuarm/64 machines with EFI

Fixes #667 (closed) Fixes docs#126 (closed)

TODO (do not merge if any pending):

• update docs
• mention new machines in build templates
• upstream edk2 and grub/grub-efi fixes - #766
• upstream the machines - #767 (closed)
• ci
• add ci jobs docs - #765
• drop unsupported machines from everywhere in this repo (qemuarm, qemuarm64, generic...)
• cleanup machine defconfigs - #770 (closed)

meta-oniro-core/conf/machine/include/qemu-efi.inc

+# SPDX-FileCopyrightText: Huawei Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+require conf/machine/include/qemu.inc
+
+PREFERRED_PROVIDER_virtual/kernel ?= "linux-yocto"
+KCONFIG_MODE = "--alldefconfig"
+MACHINE_EXTRA_RRECOMMENDS += "kernel-modules linux-firmware"
+
+SERIAL_CONSOLES ?= "115200;ttyAMA0 115200;hvc0"
+SERIAL_CONSOLES_CHECK = "${SERIAL_CONSOLES}"
+
+# This provides the bios for runqemu
+EXTRA_IMAGEDEPENDS += "edk2-firmware"
+
+IMAGE_FSTYPES += "wic wic.gz"
+WKS_FILE ?= "x-gpt-efi-disk.wks.in"
+
+# For runqemu
+QB_MACHINE_VIRT_HIGHMEM ?= "on"
+QB_MACHINE = "-machine virt,highmem=${QB_MACHINE_VIRT_HIGHMEM}"
+QB_SMP = "-smp 4"
+# For graphics to work we need to define the VGA device as well as the necessary USB devices
+QB_GRAPHICS = "-device virtio-gpu-pci"
+QB_OPT_APPEND = "-device qemu-xhci -device usb-tablet -device usb-kbd"
+# Virtio Networking support
+QB_TAP_OPT = "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no"
+QB_NETWORK_DEVICE = "-device virtio-net-pci,netdev=net0,mac=@MAC@"
+# Virtio block device
+QB_ROOTFS_OPT = "-drive id=disk0,file=@ROOTFS@,if=none,format=raw"
+# Virtio serial console
+QB_SERIAL_OPT = "-device virtio-serial-pci -chardev null,id=virtcon -device virtconsole,chardev=virtcon"
+QB_TCPSERIAL_OPT = "-device virtio-serial-pci -chardev socket,id=virtcon,port=@PORT@,host=127.0.0.1 -device virtconsole,chardev=virtcon"
+
+# Boot the wic image via EFI
+QB_DEFAULT_FSTYPE = "wic"
+QB_DEFAULT_KERNEL = "none"
+QB_DEFAULT_BIOS = "uefi.bin"
+QB_ROOTFS_EXTRA_OPT += "bootindex=0"
+EFI_PROVIDER = "grub-efi"
+MACHINE_FEATURES += "efi"