cmake: USB source files now added to mraa_LIB_PLAT_SRCS_NOAUTO
cmake: USB source files now added to mraa_LIB_PLAT_SRCS_NOAUTO

Signed-off-by: Henry Bruce <57ea958cad66de244404958c9a01f7a4ad51b29e@intel.com>
Signed-off-by: Brendan Le Foll <3e0e8c4069934e8b47d99704927a85c66c0ceb33@intel.com>

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