The ACPI 6.2 specification mandates that the Generic Timer (GT) Block
Timer Structures must have a frame number in the range 0-7.
Update the GTDT parser to warn if this condition is violated.
Signed-off-by: Krzysztof Koch <krzysztof.koch@arm.com>
Reviewed-by: Zhichao Gao <zhichao.gao@intel.com>