SHORT SFetch Instructions

EVENTSET
ROCM0 ROCP_SQ_INSTS_SMEM
ROCM1 ROCP_SQ_WAVES

METRICS
GPU SFETCH insts per work-item ROCM0/ROCM1

LONG
Formulas:
GPU SFETCH insts per work-item = ROCP_SQ_INSTS_SMEM/ROCP_SQ_WAVES
--
The average number of scalar fetch instructions from the video memory 
executed per work-item (affected by flow control).
