drivers: stepper: step_dir: Add fallback for dual-edge-step

Adds a fallback for the dual-edge-step property in the step dir common
code. Without this drivers using the common code would have to declare the
dual-edge-step property so it can default to false when not set, even if
the IC does not support adjusting it.

Signed-off-by: Fabian Blatz <[email protected]>

Author: faxe1008

drivers/stepper/step_dir/step_dir_stepper_common.h

@@ -45,7 +45,7 @@ struct step_dir_stepper_common_config {
 	{                                                                                          \
 		.step_pin = GPIO_DT_SPEC_GET(node_id, step_gpios),                                 \
 		.dir_pin = GPIO_DT_SPEC_GET(node_id, dir_gpios),                                   \
-		.dual_edge = DT_PROP(node_id, dual_edge_step),                                     \
+		.dual_edge = DT_PROP_OR(node_id, dual_edge_step, false),                           \
 		.counter = DEVICE_DT_GET_OR_NULL(DT_PHANDLE(node_id, counter)),                    \
 		.timing_source = COND_CODE_1(DT_NODE_HAS_PROP(node_id, counter),                   \
 						(&step_counter_timing_source_api),                 \