This commit updates the hardware configuration file for the x86_64-linux system. Specifically, it modifies the xserver keymap settings, ensuring proper keymap configuration for 'de' layout with 'nodeadkeys' variant in the x86_64-linux system.
Multiple boot options have been added in the hardware-configuration for the x86_64-linux system. This includes unsafe secrets mitigation options, such as 'noibrs', 'noibpb', 'nopti', etc., to potentially enhance system performance.