IntelFrameworkPkg/FrameworkUefiLib: introduce EfiOpenFileByDevicePath()
    
    Copy the EfiOpenFileByDevicePath() implementation from the previous
    (MdePkg/UefiLib) patch to FrameworkUefiLib.
    
    (Note that the FrameworkUefiLib instance too will be updated for
    <https://bugzilla.tianocore.org/show_bug.cgi?id=1074>.)
    
    Cc: Liming Gao <liming.gao@intel.com>
    Cc: Michael D Kinney <michael.d.kinney@intel.com>
    Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1008
    Contributed-under: TianoCore Contribution Agreement 1.1
    Signed-off-by: Laszlo Ersek <lersek@redhat.com>
    Reviewed-by: Liming Gao <liming.gao@intel.com>