Added first test for byte scatter reads / writes
Added first test for byte scatter reads / writes

freedesktop-unofficial-mirror/beignet,ignatenkobrain/beignet,wdv4758h/beignet,freedesktop-unofficial-mirror/beignet,zhenyw/beignet,ignatenkobrain/beignet,zhenyw/beignet,freedesktop-unofficial-mirror/beignet,wdv4758h/beignet,zhenyw/beignet,freedesktop-unofficial-mirror/beignet,wdv4758h/beignet,zhenyw/beignet,wdv4758h/beignet,ignatenkobrain/beignet,ignatenkobrain/beignet,ignatenkobrain/beignet,wdv4758h/beignet,zhenyw/beignet