chromium: Merge interlinked compiler option patches

[MaxIhlenfeldt]

Build and patch changes:

arm/0001-BUILD-do-not-specify-march-on-arm.patch depends on 0001-Remove-the-GN-settings-done-for-clang-that-conflict-.patch (i.e. it fails to apply on its own), which is confusing and makes rebasing on new upstream releases harder.

This merges the two patches into a single one.

License changes:

Added licenses: none.

Removed licenses: none.

Updated licenses: none.

Test-built:

• chromium-ozone-wayland:

  • scarthgap, clang, MACHINE=qemuarm64

• chromium-x11:

  • master, clang, MACHINE=qemuarm

[MaxIhlenfeldt]

Builds are still running, I uploaded this already to speed up the review process so I can get started on the m126 update soon.

[MaxIhlenfeldt]

Builds completed successfully, we're good to go!