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/distro/oniro-linux.conf

@@ -73,11 +73,6 @@ PREFERRED_PROVIDER_virtual/kernel:qemux86-64 = "linux-oniro"
 PREFERRED_PROVIDER_virtual/kernel:qemuarm-efi = "linux-oniro"
 PREFERRED_PROVIDER_virtual/kernel:qemuarm64-efi = "linux-oniro"
 
-# qemu-generic-arm64 has issues booting past 5.10. See:
-# https://git.yoctoproject.org/meta-arm/tree/meta-arm/conf/machine/generic-arm64.conf?id=c40fb5348b1d0f8c4a1ed779c8df6ba3cf411930
-# When kernel version is bumped we will have to revisit here.
-PREFERRED_PROVIDER_virtual/kernel_qemu-generic-arm64 = "linux-oniro"
-
 # Prefer GRUB as the EFI provider.
 #
 # The SysOTA+RAUC stack supports GRUB as the point of integration. This is
@@ -103,9 +98,6 @@ IMAGE_EFI_BOOT_FILES += "grubenv;EFI/BOOT/grubenv"
 # (note r-provider is used below)
 PREFERRED_RPROVIDER_virtual-grub-bootconf = "oniro-grub-bootconf"
 
-# qemu-generic-arm64 specific requirements
-PREFERRED_VERSION_optee-os:qemu-generic-arm64 = "3.14.0"
-
 # Default to enabling serial debug console on RaspberryPi
 ENABLE_UART ?= "1"