bluetooth: controller: openisa/RV32M1: Convert to DEVICE_DT_GET

Move to using DEVICE_DT_GET so we can phase out DT_LABEL.

Signed-off-by: Kumar Gala <galak@kernel.org>
diff --git a/subsys/bluetooth/controller/ll_sw/openisa/hal/RV32M1/debug.h b/subsys/bluetooth/controller/ll_sw/openisa/hal/RV32M1/debug.h
index 8c3ade5..f1f87c2 100644
--- a/subsys/bluetooth/controller/ll_sw/openisa/hal/RV32M1/debug.h
+++ b/subsys/bluetooth/controller/ll_sw/openisa/hal/RV32M1/debug.h
@@ -81,9 +81,9 @@
  */
 #define DEBUG_INIT() \
 	do { \
-		vega_debug_portb = device_get_binding(DT_LABEL(DT_NODELABEL(gpiob))); \
-		vega_debug_portc = device_get_binding(DT_LABEL(DT_NODELABEL(gpioc))); \
-		vega_debug_portd = device_get_binding(DT_LABEL(DT_NODELABEL(gpiod))); \
+		vega_debug_portb = DEVICE_DT_GET(DT_NODELABEL(gpiob)); \
+		vega_debug_portc = DEVICE_DT_GET(DT_NODELABEL(gpioc)); \
+		vega_debug_portd = DEVICE_DT_GET(DT_NODELABEL(gpiod)); \
 		\
 		gpio_pin_set(DEBUG0_PORT, DEBUG0_PIN, 1); \
 		gpio_pin_set(DEBUG0_PORT, DEBUG0_PIN, 0); \