MdeModulePkg/VarCheckHiiLib: Replace EFI_D_INFO with DEBUG_INFO

MdeModulePkg/VarCheckHiiLib: Replace EFI_D_INFO with DEBUG_INFO

In patch 2, we will introduce DEBUG_INFO in VarCheckHiiLib,in order to keep
consistence, replace all EFI_D_INFO with DEBUG_INFO firstly in this pacth.

Cc: Star Zeng <star.zeng@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>