Fix bug in BufferLoad mode related to writing too many registers
Fix bug in BufferLoad mode related to writing too many registers

In Buffer modes, only 32-bits is allocated to store the offset.
GLOBAL_OFFSET macros were writing 64 bit offsets.
Change so these only write 32-bits when the Buffer modes are enabled

ROCmSoftwarePlatform/Tensile,ROCmSoftwarePlatform/Tensile,ROCmSoftwarePlatform/Tensile