Update gitignore to avoid tracking unwanted files
Update gitignore to avoid tracking unwanted files

.gitignore updated to avoid tracking files generated after build. Following list
of files are added:
*.o
*.a
*.so
*.swp
*.patch
tags

Signed-off-by: Ajay Bhargav <b93e614356964ce918206702d38372829677bb7b@einfochips.com>

gatzka/cJSON,gatzka/cJSON,FSMaxB/cJSON,DaveGamble/cJSON,FSMaxB/cJSON,gatzka/cJSON,FSMaxB/cJSON,DaveGamble/cJSON,DaveGamble/cJSON,FSMaxB/cJSON,gatzka/cJSON,FSMaxB/cJSON,kbranigan/cJSON,gatzka/cJSON,DaveGamble/cJSON,etodd/cJSON,anton-sergeev/cJSON