5255 uts shouldn't open-code ISP2

*** 893,903 ****
          } else if (MAX_CMP_UNITS_PER_BOARD > 1) {
                  cmn_err(CE_WARN, "!drmach_init: DR doesn't support multiple "
                      "(%d) physical processors on one board.",
                      MAX_CMP_UNITS_PER_BOARD);
                  return (ENXIO);
!         } else if (MAX_CORES_PER_CMP & (MAX_CORES_PER_CMP - 1)) {
                  cmn_err(CE_WARN, "!drmach_init: number of logical CPUs (%d) in "
                      "physical processor is not power of 2.",
                      MAX_CORES_PER_CMP);
                  return (ENXIO);
          } else if (MAX_CPU_UNITS_PER_BOARD > DEVSET_CPU_NUMBER ||
--- 893,903 ----
          } else if (MAX_CMP_UNITS_PER_BOARD > 1) {
                  cmn_err(CE_WARN, "!drmach_init: DR doesn't support multiple "
                      "(%d) physical processors on one board.",
                      MAX_CMP_UNITS_PER_BOARD);
                  return (ENXIO);
!         } else if (!ISP2(MAX_CORES_PER_CMP)) {
                  cmn_err(CE_WARN, "!drmach_init: number of logical CPUs (%d) in "
                      "physical processor is not power of 2.",
                      MAX_CORES_PER_CMP);
                  return (ENXIO);
          } else if (MAX_CPU_UNITS_PER_BOARD > DEVSET_CPU_NUMBER ||