radeonsi: fix a crash in imageSize for cubemap arrays
radeonsi: fix a crash in imageSize for cubemap arrays

Sometimes it was f32, other times it was i32. Now it's always i32.

This fixes:
GL45-CTS.texture_cube_map_array.image_texture_size.texture_size_compute_sh

Reviewed-by: Dave Airlie <f2295d84e358395675bc8031be58672073ae065e@redhat.com>
Reviewed-by: Bas Nieuwenhuizen <1d31d94f30d40df7951505d1034e1e923d02ec49@basnieuwenhuizen.nl>
Reviewed-by: Nicolai Hähnle <0d0be6cf5ad662651be2dc5dfd44aa2b09d4c1cc@amd.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler