OvmfPkg/QemuFwCfgS3Lib: implement opcode APIs for Base Null instance

In the Base Null instance:

- QemuFwCfgS3Enabled() returns constant FALSE. This is unique to the Base
  Null instance, and the function is already present in
  "QemuFwCfgS3Base.c".

- The QemuFwCfgS3CallWhenBootScriptReady() function must never be called
  (according to the documentation, given the above). This is also unique
  to the Base Null instance, so implement the function in
  "QemuFwCfgS3Base.c".

- Consequently, the QemuFwCfgS3ScriptWriteBytes(),
  QemuFwCfgS3ScriptReadBytes(), QemuFwCfgS3ScriptSkipBytes(), and
  QemuFwCfgS3ScriptCheckValue() functions must never be called either.
  This behavior is not unique to the Base Null instance (it will be shared
  with the PEI fw_cfg instance), so add these functions to
  "QemuFwCfgS3BasePei.c".

Cc: Jordan Justen <jordan.l.justen@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=394
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

0 files changed, 0 insertions, 0 deletions