12220 loader multi-console shouldn't override bootenv.rc

*** 23,33 ****
   * Use is subject to license terms.
   */
  /*
   * Copyright 2011 Bayard G. Bell <buffer.g.overflow@gmail.com>.
   * All rights reserved. Use is subject to license terms.
!  * Copyright (c) 2018, Joyent, Inc.
   */
  
  /*
   * Kernel's linker/loader
   */
--- 23,33 ----
   * Use is subject to license terms.
   */
  /*
   * Copyright 2011 Bayard G. Bell <buffer.g.overflow@gmail.com>.
   * All rights reserved. Use is subject to license terms.
!  * Copyright 2020 Joyent, Inc.
   */
  
  /*
   * Kernel's linker/loader
   */
*** 421,431 ****
  
                  /*
                   * Now that the ramdisk is mounted, finish boot property
                   * initialization.
                   */
!                 boot_prop_finish();
          }
  
  #if !defined(_UNIX_KRTLD)
          /*
           * 'unix' is linked together with 'krtld' into one executable and
--- 421,431 ----
  
                  /*
                   * Now that the ramdisk is mounted, finish boot property
                   * initialization.
                   */
!                 read_bootenvrc();
          }
  
  #if !defined(_UNIX_KRTLD)
          /*
           * 'unix' is linked together with 'krtld' into one executable and