prserv: add LOCALCOUNT to AUTOINCs migration feature
- use migrate_localcount.bbclass to generate AUTOINC entries
which are exported to LOCALCOUNT_DUMPFILE
- import the generated AUTOINC entries
- one can migrate LOCALCOUNT to AUTOINC by executing:
bitbake-prserv-tool migrate_localcount
[YOCTO #3071]
Signed-off-by: Constantin Musca <constantinx.musca@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>