edison.md: corrected ADC resolution data
edison.md: corrected ADC resolution data

Edison kit for Arduino has TI ADS7951 ADC, which has "12-stored-in-16" bit
resolution.

Signed-off-by: Alex Tereschenko <c1573d8a2714f7b294fae3af1bb5e489479ca966@gmail.com>
Signed-off-by: Brendan Le Foll <3e0e8c4069934e8b47d99704927a85c66c0ceb33@intel.com>

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