building.md: fix clang/clang++ arg
building.md: fix clang/clang++ arg

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

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