CryptoPkg/OpensslLib: Switch to upstream fix for OpenSSL RT#3969

CryptoPkg/OpensslLib: Switch to upstream fix for OpenSSL RT#3969

Support for the UEFI target has been added to OpenSSL in commit 4d60c7e10.

Drop our partial implementation and use a backported version of what's
upstream. This includes a couple of fixes which will be needed when we
automatically generate the file list and opensslconf.h instead of
manually maintaining those.

This includes the subsequent fix in commit fb4844bbc.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Qin Long <qin.long@intel.com>
Tested-by: Qin Long <qin.long@intel.com>