staging: wfx: fix missing headers

Each headers files should include every types it needs to compile (ie.
"gcc $CFLAGS -xc file.h" should compile)
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20220113085524.1110708-4-Jerome.Pouiller@silabs.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wfx/bh.h

@@ -10,6 +10,7 @@
 
 #include <linux/atomic.h>
 #include <linux/wait.h>
+#include <linux/completion.h>
 #include <linux/workqueue.h>
 
 struct wfx_dev;

drivers/staging/wfx/hif_tx.h

@@ -10,6 +10,10 @@
 #ifndef WFX_HIF_TX_H
 #define WFX_HIF_TX_H
 
+#include <linux/types.h>
+#include <linux/mutex.h>
+#include <linux/completion.h>
+
 struct ieee80211_channel;
 struct ieee80211_bss_conf;
 struct ieee80211_tx_queue_params;

drivers/staging/wfx/hif_tx_mib.h

@@ -9,8 +9,13 @@
 #ifndef WFX_HIF_TX_MIB_H
 #define WFX_HIF_TX_MIB_H
 
-struct wfx_vif;
+#include <linux/types.h>
+
 struct sk_buff;
+struct wfx_vif;
+struct wfx_dev;
+struct hif_ie_table_entry;
+struct hif_mib_extended_count_table;
 
 int hif_set_output_power(struct wfx_vif *wvif, int val);
 int hif_set_beacon_wakeup_period(struct wfx_vif *wvif,