anv/image: Memset all aux surfaces (not just HiZ) to 0
anv/image: Memset all aux surfaces (not just HiZ) to 0

Reviewed-by: Topi Pohjolainen <749697f19798b7f640b17221fd283b903825f071@intel.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler