edison: add gpio definitions.
edison: add gpio definitions.

Signed-off-by: Thomas Ingleby <cea8b9d820e871fd22532c955ca84ff867a004a3@intel.com>

stefan-andritoiu/mraa-gpio-chardev,noahchense/mraa,yongli3/mraa,stefan-andritoiu/mraa-gpio-chardev,andreivasiliu2211/mraa,jontrulson/mraa,noahchense/mraa,seem-sky/mraa,malikabhi05/mraa,Propanu/mraa,sundw2014/mraa,alext-mkrs/mraa,zBMNForks/mraa,Propanu/mraa,ProfFan/mraa,alext-mkrs/mraa,andreivasiliu2211/mraa,jontrulson/mraa,spitfire88/mraa,w4ilun/mraa,seem-sky/mraa,Pillar1989/mraa,pctj101/mraa,seem-sky/mraa,stefan-andritoiu/mraa,sergev/mraa,stefan-andritoiu/mraa,alexandru-elisei/mraa,Propanu/mraa,pctj101/mraa,sundw2014/mraa,timrtoo/Intel,STANAPO/mraa,matt-auld/mraa,mircea/mraa,andreivasiliu2211/mraa,Kiritoalex/mraa,malikabhi05/mraa,alexandru-elisei/mraa,w4ilun/mraa,yangjae/mraa,arfoll/mraa,stefan-andritoiu/mraa,tripzero/mraa,Pillar1989/mraa,intel-iot-devkit/mraa,spitfire88/mraa,yongli3/mraa,allela-roy/mraa,timrtoo/Intel,petreeftime/mraa,alext-mkrs/mraa,ncrastanaren/mraa,mircea/mraa,jontrulson/mraa,Hbrinj/mraa,neuberfran/mraa,andreivasiliu2211/mraa,KurtE/mraa,arunlee77/mraa,w4ilun/mraa,neuberfran/mraa,Hbrinj/mraa,anonymouse64/mraa,timrtoo/Intel,allela-roy/mraa,neuroidss/mraa,Hbrinj/mraa,KurtE/mraa,petreeftime/mraa,alext-mkrs/mraa,spitfire88/mraa,Meirtz/mraa,w4ilun/mraa,zBMNForks/mraa,stefan-andritoiu/mraa-gpio-chardev,damcclos/mraa,noahchense/mraa,nioinnovation/mraa,intel-iot-devkit/mraa,alexandru-elisei/mraa,alexandru-elisei/mraa,seem-sky/mraa,stefan-andritoiu/mraa,yongli3/mraa,sergev/mraa,stefan-andritoiu/mraa,whbruce/mraa,matt-auld/mraa,Jon-ICS/mraa,Pillar1989/mraa,smileboywtu/mraa,spitfire88/mraa,KurtE/mraa,neuroidss/mraa,Jon-ICS/mraa,alex1818/mraa,Kiritoalex/mraa,sundw2014/mraa,Jon-ICS/mraa,damcclos/mraa,malikabhi05/mraa,petreeftime/mraa,yoyojacky/mraa,pctj101/mraa,petreeftime/mraa,noahchense/mraa,KurtE/mraa,alext-mkrs/mraa,intel-iot-devkit/mraa,allela-roy/mraa,SyrianSpock/mraa,stefan-andritoiu/mraa-gpio-chardev,g-vidal/mraa,anonymouse64/mraa,intel-iot-devkit/mraa,alex1818/mraa,sergev/mraa,STANAPO/mraa,sergev/mraa,damcclos/mraa,SyrianSpock/mraa,whbruce/mraa,tripzero/mraa,nioinnovation/mraa,yangjae/mraa,ProfFan/mraa,neuberfran/mraa,yoyojacky/mraa,seem-sky/mraa,arfoll/mraa,arunlee77/mraa,g-vidal/mraa,neuberfran/mraa,ProfFan/mraa,g-vidal/mraa,sergev/mraa,neuberfran/mraa,anonymouse64/mraa,timrtoo/Intel,neuroidss/mraa,g-vidal/mraa,Propanu/mraa,smileboywtu/mraa,g-vidal/mraa,arfoll/mraa,yangjae/mraa,Meirtz/mraa,STANAPO/mraa,ncrastanaren/mraa,whbruce/mraa,ncrastanaren/mraa,zBMNForks/mraa,alex1818/mraa,ncrastanaren/mraa,arunlee77/mraa,sundw2014/mraa,tripzero/mraa,KurtE/mraa,jontrulson/mraa,pctj101/mraa,timrtoo/Intel,SyrianSpock/mraa,mircea/mraa,yoyojacky/mraa,intel-iot-devkit/mraa,arfoll/mraa,Hbrinj/mraa,yongli3/mraa,whbruce/mraa,noahchense/mraa,stefan-andritoiu/mraa-gpio-chardev,arunlee77/mraa,malikabhi05/mraa,Meirtz/mraa,matt-auld/mraa,Propanu/mraa,yangjae/mraa,arfoll/mraa,alexandru-elisei/mraa,yongli3/mraa,ncrastanaren/mraa,jontrulson/mraa,sundw2014/mraa,Kiritoalex/mraa,smileboywtu/mraa,pctj101/mraa,malikabhi05/mraa,ProfFan/mraa,nioinnovation/mraa