MdeModulePkg: Change the macro name to fit coding style

Change a macro name to fit EDK2 naming conventions: Use all capital letters for #define.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: fanwang2 <fan.wang@intel.com>
Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com>
Reviewed-by: Qiu Shumin <shumin.qiu@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18200 6f19259b-4bc3-4df7-8a09-765794883524
2 files changed