Adds header, disassembler, table compiler, and template support
for the Low Power Idle Table (LPIT).

Note that the disassembler and table compiler are not shipped in
the kernel.
Signed-off-by: NBob Moore <robert.moore@intel.com>
Signed-off-by: NLv Zheng <lv.zheng@intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>