Set of improvements to acpi_hp(4) driver.

• Attach only to WMI devices that provide supported GUIDs. HP Spectre x360

has two WMI devices, only one of which provides the GUIDs.

• Pass proper device to ACPI_WMI_REMOVE_EVENT_HANDLER() on detach.
• Improve error WMI handling separating status and data paths. This allows

to hide sysctls not supported by specific hardware/BIOS.

• Improve CMI block parser to make it work on HP Spectre x360 laptop.
• In verbose mode log all unknown events to help futher improvements.