5255 uts shouldn't open-code ISP2

*** 21,35 ****
  /*
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  /*
   * PCI nexus driver general debug support
   */
  #include <sys/async.h>
  #include <sys/sunddi.h>         /* dev_info_t */
  #include <sys/ddi_impldefs.h>
  #include <sys/disp.h>
  #include <sys/archsystm.h>      /* getpil() */
--- 21,34 ----
  /*
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*
   * PCI nexus driver general debug support
   */
+ #include <sys/sysmacros.h>
  #include <sys/async.h>
  #include <sys/sunddi.h>         /* dev_info_t */
  #include <sys/ddi_impldefs.h>
  #include <sys/disp.h>
  #include <sys/archsystm.h>      /* getpil() */
*** 254,264 ****
  #ifdef  DEBUG
          if (px_dbg_reference++ == 0) {
                  int size = px_dbg_msg_size;
  
                  /* Check if px_dbg_msg_size is ^2 */
!                 size = (size & (size - 1)) ? ((size | ~size) + 1) : size;
                  px_dbg_msg_size = size;
                  px_dbg_qmask = size - 1;
                  px_dbg_msgq = kmem_zalloc(sizeof (px_dbg_msg_t) * size,
                      KM_SLEEP);
  
--- 253,263 ----
  #ifdef  DEBUG
          if (px_dbg_reference++ == 0) {
                  int size = px_dbg_msg_size;
  
                  /* Check if px_dbg_msg_size is ^2 */
!                 size = !ISP2(size) ? ((size | ~size) + 1) : size;
                  px_dbg_msg_size = size;
                  px_dbg_qmask = size - 1;
                  px_dbg_msgq = kmem_zalloc(sizeof (px_dbg_msg_t) * size,
                      KM_SLEEP);