edison: add spi mux definitions
edison: add spi mux definitions

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

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