qcacld-3.0: fix wlan_ipa_send_to_nw type

The only function called through this pointer type doesn't return
a value and the caller doesn't check for a return value. Change
the function pointer type to return void to fix a CFI failure due
to a type mismatch:

  CFI failure (target: [<ffffff853ba7cee8>]
      hdd_ipa_send_skb_to_network+0x0/0x4 [wlan]):
  ...
  Call trace:
    __ubsan_handle_cfi_check_fail+0x50/0x58
    __cfi_check+0x31fa0/0x3d5a4 [wlan]
    wlan_ipa_w2i_cb+0x5fc/0x8fc [wlan]
    ...

Change-Id: I94f6bb0fc06acebde12cf80294999d9419296c4a
CRs-Fixed: 2431600

components/ipa/core/inc/wlan_ipa_priv.h

@@ -567,7 +567,7 @@ struct wlan_ipa_tx_desc {
 };
 
 typedef int (*wlan_ipa_softap_xmit)(qdf_nbuf_t skb, qdf_netdev_t dev);
-typedef int (*wlan_ipa_send_to_nw)(qdf_nbuf_t skb, qdf_netdev_t dev);
+typedef void (*wlan_ipa_send_to_nw)(qdf_nbuf_t skb, qdf_netdev_t dev);
 
 /* IPA private context structure definition */
 struct wlan_ipa_priv {