5255 uts shouldn't open-code ISP2

*** 31,40 ****
--- 31,41 ----
   *    ModifyQP() verb.  This includes all the code for legal
   *    transitions to and from Reset, Init, RTR, RTS, SQD, SQErr,
   *    and Error.
   */
  
+ #include <sys/sysmacros.h>
  #include <sys/types.h>
  #include <sys/conf.h>
  #include <sys/ddi.h>
  #include <sys/sunddi.h>
  #include <sys/modctl.h>
*** 3373,3383 ****
           * Then find the next highest power-of-2
           */
          if (rdma_ra_in == 0) {
                  rdma_ra_in = 1;
          }
!         if ((rdma_ra_in & (rdma_ra_in - 1)) == 0) {
                  *rra_max = highbit(rdma_ra_in) - 1;
          } else {
                  *rra_max = highbit(rdma_ra_in);
          }
          return (DDI_SUCCESS);
--- 3374,3384 ----
           * Then find the next highest power-of-2
           */
          if (rdma_ra_in == 0) {
                  rdma_ra_in = 1;
          }
!         if (ISP2(rdma_ra_in)) {
                  *rra_max = highbit(rdma_ra_in) - 1;
          } else {
                  *rra_max = highbit(rdma_ra_in);
          }
          return (DDI_SUCCESS);
*** 3409,3419 ****
           * Then find the next highest power-of-2
           */
          if (rdma_ra_out == 0) {
                  rdma_ra_out = 1;
          }
!         if ((rdma_ra_out & (rdma_ra_out - 1)) == 0) {
                  *sra_max = highbit(rdma_ra_out) - 1;
          } else {
                  *sra_max = highbit(rdma_ra_out);
          }
          return (DDI_SUCCESS);
--- 3410,3420 ----
           * Then find the next highest power-of-2
           */
          if (rdma_ra_out == 0) {
                  rdma_ra_out = 1;
          }
!         if (ISP2(rdma_ra_out)) {
                  *sra_max = highbit(rdma_ra_out) - 1;
          } else {
                  *sra_max = highbit(rdma_ra_out);
          }
          return (DDI_SUCCESS);