StdLib: Add a file was missed and should have been included in check-in 12061.

Signed-off-by: darylm503


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12916 6f19259b-4bc3-4df7-8a09-765794883524
1 file changed