11843 update Intel microcode to 20190918
Reviewed by: Dan McDonald <danmcd@joyent.com>
Portions contributed by: Andy Fiddaman <andy@omniosce.org>
Portions contributed by: Robert Mustacchi <rm@fingolfin.org>

@@ -18,11 +18,11 @@
                 hwdata \
                 locale \
                 terminfo \
                 zoneinfo
 
-i386_SUBDIRS=   amdpmc perfmon
+i386_SUBDIRS=   amdpmc perfmon ucode
 
 SUBDIRS = $(COMMON_SUBDIRS) $($(MACH)_SUBDIRS)
 
 MSGSUBDIRS=     zoneinfo