In AtaAtapiPassThru driver

In AtaAtapiPassThru driver
1.	move the non-blocking task related setting ahead to store the MapTable and PageCount in case there is a IO operation error happened then the error handler code could use those information to release the resource.
2.	Enlarge the TPL protective area to make sure the simulative delay time is accurate when there is mixing usage of Non blocking and blocking I/O.

Signed-off-by: qianouyang
Reviewed-by: erictian
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12712 6f19259b-4bc3-4df7-8a09-765794883524