Vlv2TbltDevicePkg: Fix XCODE5 build errors

* Remove extra parenthesis in if statements
* Remove local variable structure initialization
  that adds use of memcpy() on XCODE X64 builds.
  Move per-initialize structure to a module global.

Cc: Zailiang Sun <zailiang.sun@intel.com>
Cc: Yi Qian <yi.qian@intel.com>
Cc: Gary Lin <glin@suse.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Zailiang Sun <zailiang.sun@intel.com>
Tested-by: Gary Lin <glin@suse.com>