11630 remove checks for 64-bit capable hardware

*** 19,28 ****
--- 19,29 ----
   * CDDL HEADER END
   */
  /*
   * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
+  * Copyright 2019 Peter Tribble.
   */
  
  /*
   * Ported from 4.1.1_PSRA: "@(#)openprom.c 1.19 91/02/19 SMI";
   *
*** 488,498 ****
          case OPROMPATH2DRV:
          case OPROMPROM2DEVNAME:
  #if !defined(__i386) && !defined(__amd64)
          case OPROMGETFBNAME:
          case OPROMDEV2PROMNAME:
-         case OPROMREADY64:
  #endif  /* !__i386 && !__amd64 */
                  if ((mode & FREAD) == 0) {
                          return (EPERM);
                  }
                  break;
--- 489,498 ----
*** 975,1016 ****
                      valbuf, valsize) < 0)
                          error = EINVAL;
  
                  break;
          }
- 
-         case OPROMREADY64: {
-                 struct openprom_opr64 *opr =
-                     (struct openprom_opr64 *)opp->oprom_array;
-                 int i;
-                 pnode_t id;
- 
-                 if (userbufsize < sizeof (*opr)) {
-                         error = EINVAL;
-                         break;
-                 }
- 
-                 valsize = userbufsize -
-                     offsetof(struct openprom_opr64, message);
- 
-                 i = prom_version_check(opr->message, valsize, &id);
-                 opr->return_code = i;
-                 opr->nodeid = (int)id;
- 
-                 valsize = offsetof(struct openprom_opr64, message);
-                 valsize += strlen(opr->message) + 1;
- 
-                 /*
-                  * copyout only the part of the user buffer we need to.
-                  */
-                 if (copyout(opp, (void *)arg,
-                     (size_t)(min((uint_t)valsize, userbufsize) +
-                     sizeof (uint_t))) != 0)
-                         error = EFAULT;
-                 break;
- 
-         }       /* case OPROMREADY64 */
  #endif  /* !__i386 && !__amd64 */
          }       /* switch (cmd) */
  
          kmem_free(opp, userbufsize + sizeof (uint_t) + 1);
          return (error);
--- 975,984 ----