isl_band.c: multi_aff_tile: use isl_val
isl_band.c: multi_aff_tile: use isl_val

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

UBERTC/isl,cfx-next/toolchain_isl-upstream,KangDroidSMProject/ISL,VanirLLVM/toolchain_isl,BobSaget-Mod/libisl,crossbuild/isl,SaberMod/isl-current,KangDroidSMProject/ISL,PollyLabs/isl,UBERTC/isl,KangDroidSMProject/ISL,inducer/isl-mirror,KangDroidSMProject/ISL,Meinersbur/isl,inducer/isl-mirror,Distrotech/isl,VanirLLVM/toolchain_isl,Meinersbur/isl,tobig/isl,cfx-next/toolchain_isl-upstream,nicolasvasilache/isl,BenzoSM/isl,jleben/isl,Distrotech/isl,tobig/isl,simbuerg/isl,inducer/isl-mirror,BenzoSM/isl,SaberMod/isl-current,abduld/isl,VanirLLVM/toolchain_isl,Meinersbur/isl,cfx-next/toolchain_isl-upstream,serge-sans-paille/isl,SaberMod/isl-current,serge-sans-paille/isl,jleben/isl,evaautomation/isl,crossbuild/isl,BobSaget-Mod/libisl,Distrotech/isl,BobSaget-Mod/libisl,nicolasvasilache/isl,serge-sans-paille/isl,serge-sans-paille/isl,evaautomation/isl,BenzoSM/isl,simbuerg/isl,inducer/isl-mirror,jleben/isl,Distrotech/isl,BenzoSM/isl,nicolasvasilache/isl,SaberMod/isl-current,abduld/isl,UBERTC/isl,VanirLLVM/toolchain_isl,jleben/isl,jleben/isl,crossbuild/isl,cfx-next/toolchain_isl-upstream,PollyLabs/isl,nicolasvasilache/isl,abduld/isl,Meinersbur/isl,BobSaget-Mod/libisl,evaautomation/isl,Distrotech/isl,PollyLabs/isl,cfx-next/toolchain_isl-upstream,BenzoSM/isl,serge-sans-paille/isl,simbuerg/isl,tobig/isl,simbuerg/isl,tobig/isl,crossbuild/isl,inducer/isl-mirror,UBERTC/isl,nicolasvasilache/isl,simbuerg/isl,BobSaget-Mod/libisl,VanirLLVM/toolchain_isl,KangDroidSMProject/ISL,evaautomation/isl,PollyLabs/isl,abduld/isl,PollyLabs/isl