Add XGMI read/write sum metrics

Change-Id: I898b779ea7f5336edf0d047fb1e5d3ec40085baa

python_binding/rdc_bootstrap.py

@@ -133,6 +133,8 @@ class rdc_field_t(c_int):
      RDC_FI_XGMI_5_WRITE_KB = 713
      RDC_FI_XGMI_6_WRITE_KB = 714
      RDC_FI_XGMI_7_WRITE_KB = 715
+     RDC_FI_XGMI_TOTAL_READ_KB = 716
+     RDC_FI_XGMI_TOTAL_WRITE_KB = 717
      RDC_FI_PROF_MEAN_OCCUPANCY_PER_CU = 800
      RDC_FI_PROF_MEAN_OCCUPANCY_PER_ACTIVE_CU = 801
      RDC_FI_PROF_ACTIVE_CYCLES = 802