[ChangeLog][Platform Specific Changes][Linux] Added a device spec for
Raspberry Pi 4 (32-bit, V3D)
Change-Id: Idea889842a89dcc74705f1bb9559953dadc07251
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Reviewed-by: Andy Nichols <andy.nichols@qt.io>