qcacld-3.0: Fix -Wmissing-prototypes in wlan_hdd_power

We want to enable the compiler's -Wmissing-prototypes switch, but
there is existing code that is generating warnings. Fix all warnings
in wlan_hdd_power.

Change-Id: I8ebc518eed2c56764eb18ef6881e1fb344b2f0d4
CRs-Fixed: 1074336

core/hdd/src/wlan_hdd_power.c

@@ -52,6 +52,7 @@
 #include <wlan_nlink_srv.h>
 #include <wlan_hdd_misc.h>
 #include <wlan_hdd_power.h>
+#include <wlan_hdd_host_offload.h>
 #include <dbglog_host.h>
 #include <wlan_hdd_trace.h>
 #include <wlan_hdd_p2p.h>
@@ -544,7 +545,7 @@ void hdd_conf_ns_offload(hdd_adapter_t *adapter, bool fenable)
  *
  * Return: None
  */
-void __hdd_ipv6_notifier_work_queue(struct work_struct *work)
+static void __hdd_ipv6_notifier_work_queue(struct work_struct *work)
 {
 	hdd_adapter_t *pAdapter =
 		container_of(work, hdd_adapter_t, ipv6NotifierWorkQueue);
@@ -663,7 +664,7 @@ void hdd_conf_hostoffload(hdd_adapter_t *pAdapter, bool fenable)
  *
  * Return: None
  */
-void __hdd_ipv4_notifier_work_queue(struct work_struct *work)
+static void __hdd_ipv4_notifier_work_queue(struct work_struct *work)
 {
 	hdd_adapter_t *pAdapter =
 		container_of(work, hdd_adapter_t, ipv4NotifierWorkQueue);