OvmfPkg: Disable debugging for UNIXGCC to save space

UNIXGCC builds larger images than GCC44, and can have issues
fitting into the FD image. Therefore, when using UNIXGCC,
debug will be disabled by default.

The README file is updated with instructions for selectively
enabling debug for UNIXGCC.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13569 6f19259b-4bc3-4df7-8a09-765794883524
OvmfPkg: Move DxeServicesTableLib to common LibraryClasses

ConSplitterDxe (UEFI_DRIVER) now uses this library class.
Move the library mapping to the common LibraryClasses section.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13570 6f19259b-4bc3-4df7-8a09-765794883524
OvmfPkg/*.dsc: Move PCD locations to be similar to OvmfPkgIa32X64.dsc

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13571 6f19259b-4bc3-4df7-8a09-765794883524
OvmfPkg: clean up memory map

Fix IO-APIC range size.
Add HPET.
Take LAPIC base from PCD and fix range size.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13572 6f19259b-4bc3-4df7-8a09-765794883524
OvmfPkg: install an SSDT with a dynamic OperationRegion called FWDT

"FWDT" ("firmware data") is allocated as EfiReservedMemoryType, with
AllocateReservedPool(). <MdePkg/Include/Library/MemoryAllocationLib.h>
doesn't seem to provide direct access to EfiACPIReclaimMemory, but at this
point the former seems sufficient.

Based on SeaBIOS commit 2062f2ba by Gerd Hoffmann <kraxel@redhat.com>.

v3:
- coding style fixes:
  - BDAT     -> FWDT
  - __packed -> #pragma pack(1)
  - BFLD     -> FIRMWARE_DATA, PCI_WINDOW
  - Bfld     -> FwData
- Ssdt.asl: changed license to 2-clause BSDL, paraphrasing Dsdt.asl

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13573 6f19259b-4bc3-4df7-8a09-765794883524
OvmfPkg: scan memory space map and populate FWDT (32-bit fields only)

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
[jordan.l.justen@intel.com: minor cleanup]
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13574 6f19259b-4bc3-4df7-8a09-765794883524
OvmfPkg/AcpiTables/Dsdt.asl: strip trailing whitespace

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13575 6f19259b-4bc3-4df7-8a09-765794883524
OvmfPkg/AcpiTables/Dsdt.asl: report the PCI IO ranges set in FWDT

Based on SeaBIOS commit 2062f2ba by Gerd Hoffmann <kraxel@redhat.com>.

v3: comments on FWDT fields

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13576 6f19259b-4bc3-4df7-8a09-765794883524