be: Restore be_set_va_list_type_pointer().

It was accidentally removed in ec7cfdce.

ir/be/bevarargs.c

@@ -65,3 +65,8 @@ ir_entity *be_make_va_start_entity(ir_type *const frame_type, int const offset)
 	set_entity_offset(va_start, offset);
 	return va_start;
 }
+
+void be_set_va_list_type_pointer(backend_params *const p)
+{
+	p->va_list_type = new_type_pointer(get_type_for_mode(mode_ANY));
+}

ir/be/bevarargs.h

@@ -37,4 +37,6 @@ void be_set_va_list_type_pointer(backend_params *p);
 
 ir_entity *be_make_va_start_entity(ir_type *frame_type, int offset);
 
+void be_set_va_list_type_pointer(backend_params *p);
+
 #endif

ir/be/ia32/ia32_bearch.c

@@ -1374,9 +1374,7 @@ static void ia32_init(void)
 	ia32_mode_float32 = new_float_mode("fp32", irma_ieee754, 8, 23,
 	                                   ir_overflow_indefinite);
 
-	// va_list is a void pointer
-	ir_type *type_va_list = new_type_pointer(get_type_for_mode(mode_ANY));
-	ia32_backend_params.va_list_type = type_va_list;
+	be_set_va_list_type_pointer(&ia32_backend_params);
 
 	if (ia32_cg_config.use_sse2 || ia32_cg_config.use_softfloat) {
 		ia32_backend_params.mode_float_arithmetic = NULL;

ir/be/sparc/sparc_bearch.c

@@ -558,7 +558,7 @@ static const backend_params *sparc_get_backend_params(void)
 		.float_int_overflow             = ir_overflow_min_max,
 	};
 
-	p.va_list_type = new_type_pointer(get_type_for_mode(mode_ANY));
+	be_set_va_list_type_pointer(&p);
 
 	sparc_mode_Q
 		= new_float_mode("Q", irma_ieee754, 15, 112, ir_overflow_min_max);