ac/llvm : Adding Number of all interpolated inputs in ac_shader_abi

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15117>

src/amd/llvm/ac_shader_abi.h

@@ -128,6 +128,9 @@ struct ac_shader_abi {
    /* Whether to detect divergent textures/samplers index and apply
     * waterfall to avoid incorrect rendering. */
    bool use_waterfall_for_divergent_tex_samplers;
+
+   /* Number of all interpolated inputs */
+   unsigned num_interp;
 };
 
 #endif /* AC_SHADER_ABI_H */