[bug#70892,v2,0/7] Add visionfive2 support.

hello, this is v2 version,
1. split opensbi-for-visionfive2 from u-boot-starfive-visionfive2,
2. allow kernel-arguments pass more content.
3. move kernel-arguments's tty setting to agetty-service-type.
4. install uEnv.txt to set u-boot's fdt name. 
5. more comments.

Zheng Junjie (7):
  gnu: linux-libre-6.8: add riscv config.
  image: raise error when use both grub-efi* bootloader and not gpt
    image.
  gnu: shepherd-0.10: When target riscv64, use guile-fibers-1.1.
  gnu: Add opensbi-for-visionfive2.
  gnu: Add u-boot-starfive-visionfive2.
  bootloader: Add u-boot-starfive-visionfive2-bootloader.
  system: images: Add visionfive2 module.

 Makefile.am                                   |    1 +
 gnu/bootloader/u-boot.scm                     |   29 +
 gnu/local.mk                                  |    1 +
 gnu/packages/admin.scm                        |    5 +-
 .../aux-files/linux-libre/6.8-riscv.conf      | 7681 +++++++++++++++++
 gnu/packages/bootloaders.scm                  |   25 +
 gnu/packages/firmware.scm                     |   12 +
 gnu/system/image.scm                          |    6 +-
 gnu/system/images/visionfive2.scm             |  126 +
 9 files changed, 7881 insertions(+), 5 deletions(-)
 create mode 100644 gnu/packages/aux-files/linux-libre/6.8-riscv.conf
 create mode 100644 gnu/system/images/visionfive2.scm


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