- Update config files.
      config/i386/pae and config/x86-64/default:
    	CONFIG_ACPI_AC=y
    	CONFIG_ACPI_BATTERY=y
    	CONFIG_ACPI_BUTTON=y
    	CONFIG_ACPI_VIDEO=y
    	CONFIG_ACPI_FAN=y
    	CONFIG_ACPI_PROCESSOR=y
    	CONFIG_ACPI_THERMAL=y
    	CONFIG_ACPI_CONTAINER=y
    	CONFIG_X86_ACPI_CPUFREQ=y
    	CONFIG_THERMAL=y