samples: bluetooth: fix adv_update error in bthome_sensor_template

- "bt_le_adv_update_data()" func calls just after bt_enable() call
 without completion of bt_ready() which is called as part of worker
 thread within init_work() causes issue where bluetooth controller
 has not been initialized and provides cb to app before app requests
 advertise_update to the stack.
- remove bt_ready() func and place content within main() post
 bt_enable() fixes this issue.

Signed-off-by: Nirav Agrawal <nirav.agrawal@nxp.com>

Author: nirav-agrawal

samples/bluetooth/bthome_sensor_template/src/main.c

@@ -34,11 +34,18 @@ static struct bt_data ad[] = {
 	BT_DATA(BT_DATA_SVC_DATA16, service_data, ARRAY_SIZE(service_data))
 };
 
-static void bt_ready(int err)
+int main(void)
 {
+	int err;
+	int temp = 0;
+
+	printk("Starting BTHome sensor template\n");
+
+	/* Initialize the Bluetooth Subsystem */
+	err = bt_enable(NULL);
 	if (err) {
 		printk("Bluetooth init failed (err %d)\n", err);
-		return;
+		return 0;
 	}
 
 	printk("Bluetooth initialized\n");
@@ -47,21 +54,6 @@ static void bt_ready(int err)
 	err = bt_le_adv_start(ADV_PARAM, ad, ARRAY_SIZE(ad), NULL, 0);
 	if (err) {
 		printk("Advertising failed to start (err %d)\n", err);
-		return;
-	}
-}
-
-int main(void)
-{
-	int err;
-	int temp = 0;
-
-	printk("Starting BTHome sensor template\n");
-
-	/* Initialize the Bluetooth Subsystem */
-	err = bt_enable(bt_ready);
-	if (err) {
-		printk("Bluetooth init failed (err %d)\n", err);
 		return 0;
 	}