intel_de3815.c: check i2c device fd
intel_de3815.c: check i2c device fd

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

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