isl_stream_read_obj: improve error message on incompatible combination attempt
isl_stream_read_obj: improve error message on incompatible combination attempt

Signed-off-by: Sven Verdoolaege <e5350bbed4977f5eb8ae1dc6abd9ae59d21ace75@kotnet.org>

evaautomation/isl,UBERTC/isl,simbuerg/isl,KangDroidSMProject/ISL,UBERTC/isl,Meinersbur/isl,BenzoSM/isl,abduld/isl,tobig/isl,nicolasvasilache/isl,SaberMod/isl-current,nicolasvasilache/isl,UBERTC/isl,tobig/isl,evaautomation/isl,evaautomation/isl,KangDroidSMProject/ISL,PollyLabs/isl,inducer/isl-mirror,inducer/isl-mirror,nicolasvasilache/isl,Distrotech/isl,SaberMod/isl-current,simbuerg/isl,PollyLabs/isl,BenzoSM/isl,abduld/isl,SaberMod/isl-current,KangDroidSMProject/ISL,Meinersbur/isl,evaautomation/isl,inducer/isl-mirror,PollyLabs/isl,simbuerg/isl,inducer/isl-mirror,Meinersbur/isl,UBERTC/isl,Distrotech/isl,simbuerg/isl,tobig/isl,BenzoSM/isl,nicolasvasilache/isl,tobig/isl,PollyLabs/isl,Meinersbur/isl,Distrotech/isl,simbuerg/isl,KangDroidSMProject/ISL,BenzoSM/isl,inducer/isl-mirror,PollyLabs/isl,nicolasvasilache/isl,abduld/isl,SaberMod/isl-current,BenzoSM/isl,Distrotech/isl,Distrotech/isl,abduld/isl,KangDroidSMProject/ISL