Add PKG_DBDIR=/var/db/pkg for NetBSD 9.1 pkg_install binaries.

Author: tsutsui

liveimagefiles/etc/mk.conf

@@ -4,6 +4,7 @@ OBJMACHINE=yes
 MKHOSTOBJ=yes
 
 # for pkgsrc
+PKG_DBDIR=/var/db/pkg	# for NetBSD 9.1 defaults
 #WRKOBJDIR=/path/to/fastdisk/work.${MACHINE_ARCH}
 #MAKE_JOBS=2
 #SKIP_LICENSE_CHECK=yes