1. Make the USB mouse cursor move smoothly in 'edit'.
2. Make the USB mouse can drag and select text in 'edit'.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Qiu Shumin <shumin.qiu@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>