radeonsi: don't use ACQUIRE_MEM on the graphics ring
radeonsi: don't use ACQUIRE_MEM on the graphics ring

It's only required on the compute ring. This matches the closed driver.

The compute flag is removed to prevent confusion and Bas's compute shader
patches remove it in the whole function.

Reviewed-by: Nicolai Hähnle <0d0be6cf5ad662651be2dc5dfd44aa2b09d4c1cc@amd.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler