Fix efr32 `otPlatRandomGetTrue()` declaration. (#1654)
Fix efr32 `otPlatRandomGetTrue()` declaration. (#1654)


xiaom-GitHub/openthread,gandreello/openthread,aeliot/openthread,openthread/openthread,chshu/openthread,fbsder/openthread,mszczodrak/openthread,abtink/openthread,vaas-krish/openthread,chshu/openthread,chshu/openthread,JakubBrachTieto/openthread,erja-gp/openthread,vaas-krish/openthread,openthread/openthread,lanyuwen/openthread,aeliot/openthread,aeliot/openthread,LeZhang2016/openthread,lanyuwen/openthread,mszczodrak/openthread,georgecpr/openthread,bukepo/openthread,JakubBrachTieto/openthread,turon/openthread,gandreello/openthread,jwhui/openthread,fbsder/openthread,JakubBrachTieto/openthread,xiaom-GitHub/openthread,pvanhorn/openthread,abtink/openthread,fbsder/openthread,srickardti/openthread,abtink/openthread,openthread/openthread,LeZhang2016/openthread,erja-gp/openthread,srickardti/openthread,georgecpr/openthread,xiaom-GitHub/openthread,georgecpr/openthread,turon/openthread,aeliot/openthread,gandreello/openthread,fbsder/openthread,turon/openthread,pvanhorn/openthread,lanyuwen/openthread,bukepo/openthread,JakubBrachTieto/openthread,georgecpr/openthread,vaas-krish/openthread,erja-gp/openthread,chshu/openthread,mszczodrak/openthread,librasungirl/openthread,LeZhang2016/openthread,mszczodrak/openthread,xiaom-GitHub/openthread,lanyuwen/openthread,mszczodrak/openthread,bukepo/openthread,lanyuwen/openthread,jwhui/openthread,erja-gp/openthread,pvanhorn/openthread,LeZhang2016/openthread,jwhui/openthread,srickardti/openthread,bukepo/openthread,vaas-krish/openthread,vaas-krish/openthread,lanyuwen/openthread,chshu/openthread,JakubBrachTieto/openthread,JakubBrachTieto/openthread,gandreello/openthread,gandreello/openthread,LeZhang2016/openthread,xiaom-GitHub/openthread,openthread/openthread,pvanhorn/openthread,gandreello/openthread,abtink/openthread,librasungirl/openthread,mszczodrak/openthread,pvanhorn/openthread,fbsder/openthread,LeZhang2016/openthread,aeliot/openthread,erja-gp/openthread,fbsder/openthread,aeliot/openthread,librasungirl/openthread,vaas-krish/openthread,turon/openthread,erja-gp/openthread,chshu/openthread,pvanhorn/openthread,georgecpr/openthread,xiaom-GitHub/openthread,librasungirl/openthread,georgecpr/openthread,srickardti/openthread,jwhui/openthread