[PATCH][SRU][E] Add nvidia-435 to linux-restricted-modules

[Seth Forshee]

BugLink: https://bugs.launchpad.net/bugs/1856407

SRU Justification

Impact: The nvidia-435 drivers are missing from linux-restricted-modules
in eoan. On install ubuntu-drivers picks 435 as the newest version, and
users must use self-signed dkms drivers and enroll a MOK.

Fix: Add nvidia-435 dkms builds to linux and l-r-m for eoan.

Test Case: A test build is available in ppa:sforshee/test-builds. Verify
that signed drivers for nvidia-435 can be installed for eoan via the
linux-modules-nvidia-435-{generic,lowlatency} packages.

Regression Potential: The nvidia-435 l-r-m drivers are new packages
built from the same source as the nvidia-435 dkms driver, so regressions
are unlikely.

This requires changes to both the linux and linux-restricted-modules
packages. Patches for both follow.

Thanks,
Seth