Update _OSC definition comments to correspond to the 1-based spec wording
(DWORD 1, etc.)  Write _OSC field #defines as hex to make clear that they
are bits in a 32-bit DWORD, not arbitrary values.  No functional change.
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Acked-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>