Bring back LX zones.

*** 484,493 ****
--- 484,494 ----
  i386_SUBDIRS= \
          cmd/acpihpd \
          cmd/biosdev \
          cmd/rtc \
          cmd/ucodeadm \
+         lib/brand/lx \
          lib/cfgadm_plugins/sata \
          lib/cfgadm_plugins/sbd \
          lib/libfdisk
  
  sparc_SUBDIRS= \