swig: add gpio enum definitions on interface file
swig: add gpio enum definitions on interface file

Signed-off-by: Brendan Le Foll <3e0e8c4069934e8b47d99704927a85c66c0ceb33@intel.com>

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