Fixed submodule paths for roms/u-boot and roms/u-boot-sam460ex

[javerik]

Bugfixes in submodule references

There are two submodules which have now different upstream addresses.

This caused yocto build errors in fetching submodules.

WARNING: qemu-xilinx-native-8.2.7+git-r0 do_fetch: Failed to fetch URL gitsm://gitlab.com/qemu-project/u-boot.git;protocol=https;name=roms/u-boot;subpath=roms/u-boot;nobranch=1;lfs=True;bareclone=1;nobranch=1, attempting MIRRORS if available

Before

• https://gitlab.com/qemu-project/u-boot.git
• https://gitlab.com/qemu-project/u-boot-sam460ex.git

[submodule "roms/u-boot"]
	path = roms/u-boot
	url = https://gitlab.com/qemu-project/u-boot.git

[submodule "roms/u-boot-sam460ex"]
	path = roms/u-boot-sam460ex
	url = https://gitlab.com/qemu-project/u-boot-sam460ex.git

Updated

• https://gitlab.com/qemu-project-mirrors/u-boot.git
• https://gitlab.com/qemu-project-mirrors/u-boot-sam460ex.git

[github-actions]

Thank you for your interest in the QEMU project.

This repository is a read-only mirror of the project's repostories hosted
on https://gitlab.com/qemu-project/qemu.git.
The project does not process merge requests filed on GitHub.

QEMU welcomes contributions of code (either fixing bugs or adding new
functionality). However, we get a lot of patches, and so we have some
guidelines about contributing on the project website:
https://www.qemu.org/contribute/