OvmfPkg: consolidate POWER_MGMT_REGISTER_Q35() on "Q35MchIch9.h" macros

OvmfPkg: consolidate POWER_MGMT_REGISTER_Q35() on "Q35MchIch9.h" macros

All POWER_MGMT_REGISTER_Q35() macro invocations in OvmfPkg should use the
macros in "Q35MchIch9.h" as arguments.

Cc: Gabriel Somlo <somlo@cmu.edu>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Gabriel Somlo <somlo@cmu.edu>
Tested-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17434 6f19259b-4bc3-4df7-8a09-765794883524