fix(dracut.sh): build in microcode blobs by default

[bp3tk0v]

Simply build them in unconditionally. Considering the ubiquitous impact of CPU hw vulnerabilities and a lot of them being addressed by microcode or requiring microcode to apply the needed mitigations, microcode practically gets included on the majority of setups.

If anyone cares about initrd size, one can still use dracut's

--no-early-microcode

option to prevent that.

Drop the now not needed --early-microcode option too.

For more background info on the whole topic, follow this thread:

https://lore.kernel.org/all/c67bd324-cec0-4fe4-b3b1-fc1d1e4f2967@leemhuis.info/

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Checklist

• [ ] I have tested it locally
• [ ] I have reviewed and updated any documentation if relevant
• [ ] I am providing new code and test(s) for it

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This issue is being marked as stale because it has not had any recent activity. It will be closed if no further activity occurs. If this is still an issue in the latest release of Dracut and you would like to keep it open please comment on this issue within the next 7 days. Thank you for your contributions.