tftp-hpa: add from OE-Classic, update and tidy up
* Update to 5.2
* Add patches from Fedora
* Add DESCRIPTION and better SUMMARY
* Make LICENSE more accurate
* Add LIC_FILES_CHKSUM
* Update ALTERNATIVE_* definitions
* Handle hardcoded paths in initscript
Much of this was done by Joe MacDonald <joe.macdonald@windriver.com>.
(From meta-openembedded rev:
2abab0e93dc5099df8a9b7466de803a2d8372eb9)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>