ac/nir: Expose ac_nir_unpack_value in ac_nir_helpers.h

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32966>

src/amd/common/ac_nir.c

@@ -175,7 +175,7 @@ ac_nir_store_arg(nir_builder *b, const struct ac_shader_args *ac_args, struct ac
       nir_store_vector_arg_amd(b, val, .base = arg.arg_index);
 }
 
-static nir_def *
+nir_def *
 ac_nir_unpack_value(nir_builder *b, nir_def *value, unsigned rshift, unsigned bitwidth)
 {
    if (rshift == 0 && bitwidth == 32)

src/amd/common/ac_nir_helpers.h

@@ -86,6 +86,9 @@ typedef struct nir_xfb_info nir_xfb_info;
 /* Executed by ac_nir_cull when the current primitive is accepted. */
 typedef void (*ac_nir_cull_accepted)(nir_builder *b, void *state);
 
+nir_def *
+ac_nir_unpack_value(nir_builder *b, nir_def *value, unsigned rshift, unsigned bitwidth);
+
 void
 ac_nir_store_var_components(nir_builder *b, nir_variable *var, nir_def *value,
                             unsigned component, unsigned writemask);