DuetPkg BootSector: fix a bug in st32_64.S that the size for GDTR.limit is wrong.
DuetPkg BootSector: fix a bug in st32_64.S that the size for GDTR.limit is wrong.

Signed-off-by: rsun3

git-svn-id: 5648d1bec6962b0a6d1d1b40eba8cf5cdb62da3d@12934 6f19259b-4bc3-4df7-8a09-765794883524

MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2