OvmfPkg: Support building OVMF's ResetVector during the EDK II build

Using NASM we build OVMF's ResetVector as part of the EDK II build
process.

v2:
 * Use EDK II extension of .nasmb rather than .nasmbin

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

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/OvmfPkg@15823 6f19259b-4bc3-4df7-8a09-765794883524
OvmfPkg: Build OVMF ResetVector during EDK II build process

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

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/OvmfPkg@15824 6f19259b-4bc3-4df7-8a09-765794883524
OvmfPkg/ResetVector: Remove pre-built binaries

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

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/OvmfPkg@15825 6f19259b-4bc3-4df7-8a09-765794883524