[nrf fromtree] modules: hal_nordic: nrf_802154: remove magic number

This commit replaces a magic number in the definition of serialization
ring buffer length with a macro provided by the 802.15.4 driver.

Signed-off-by: Jędrzej Ciupis <[email protected]>
(cherry picked from commit 00f7c0e)

Author: Jędrzej Ciupis

modules/hal_nordic/nrf_802154/serialization/platform/nrf_802154_spinel_backend_ipc.c

@@ -9,6 +9,7 @@
 #include <zephyr/device.h>
 #include <zephyr/logging/log.h>
 
+#include "nrf_802154.h"
 #include "nrf_802154_spinel_backend_callouts.h"
 #include "nrf_802154_serialization_error.h"
 #include "../../spinel_base/spinel.h"
@@ -74,7 +75,7 @@ nrf_802154_ser_err_t nrf_802154_backend_init(void)
 #define SEND_THREAD_STACK_SIZE 1024
 
 /* Make the ring buffer long enough to hold all notifications that the driver can produce */
-#define RING_BUFFER_LEN (CONFIG_NRF_802154_RX_BUFFERS + 10)
+#define RING_BUFFER_LEN (NRF_802154_MAX_PENDING_NOTIFICATIONS + 1)
 
 static K_SEM_DEFINE(send_sem, 0, RING_BUFFER_LEN);
 K_THREAD_STACK_DEFINE(send_thread_stack, SEND_THREAD_STACK_SIZE);