Reports failure on non-amd64 architectures

[basak-qcom]

Hi,

Thank you for needrestart!

We found that when running on an arm64 machine, it always reports Failed to check for processor microcode upgrades. but does exit with a zero status. However, we're concerned that this could still be alarming for users and seem like a system misconfiguration rather than needrestart simply not having support for arm64.

I found the relevant code here:

https://github.com/liske/needrestart/blame/6d7a76b065dc82386f3e10a77f4cb1bca853804b/needrestart#L1066

...and found that there's only support for AMD and Intel at:

https://github.com/liske/needrestart/tree/6d7a76b065dc82386f3e10a77f4cb1bca853804b/perl/lib/NeedRestart/uCode

Do you think it would be correct to suppress this message entirely when running on a different architecture please, unless/until there's a uCode module that supports this?