staging: rtl8712: remove #define _workitem struct work_struct

_workitem is just a #define for work_struct.  Remove the #define and
use struct work_struct directly instead.
Signed-off-by: James A Shackleford <shack@linux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/drv_types.h

@@ -173,7 +173,7 @@ struct _adapter {
 	struct net_device_stats stats;
 	struct iw_statistics iwstats;
 	int pid; /*process id from UI*/
-	_workitem wkFilterRxFF0;
+	struct work_struct wkFilterRxFF0;
 	u8 blnEnableRxFF0Filter;
 	spinlock_t lockRxFF0Filter;
 	const struct firmware *fw;

drivers/staging/rtl8712/osdep_service.h

@@ -50,7 +50,6 @@ struct	__queue	{
 #define _pkt struct sk_buff
 #define _buffer unsigned char
 #define thread_exit() complete_and_exit(NULL, 0)
-#define _workitem struct work_struct
 
 #define _init_queue(pqueue)				\
 	do {						\

drivers/staging/rtl8712/rtl871x_led.h

@@ -99,7 +99,7 @@ struct LED_871x {
 						   * either LED_ON or OFF.*/
 
 	struct timer_list	BlinkTimer; /* Timer object for led blinking.*/
-	_workitem		BlinkWorkItem; /* Workitem used by BlinkTimer */
+	struct work_struct	BlinkWorkItem; /* Workitem used by BlinkTimer */
 };
 
 struct led_priv {

drivers/staging/rtl8712/rtl871x_pwrctrl.h

@@ -107,8 +107,8 @@ struct	pwrctrl_priv {
 	uint ImrContent;	/* used to store original imr. */
 	uint bSleep; /* sleep -> active is different from active -> sleep. */
 
-	_workitem SetPSModeWorkItem;
-	_workitem rpwm_workitem;
+	struct work_struct SetPSModeWorkItem;
+	struct work_struct rpwm_workitem;
 	struct timer_list rpwm_check_timer;
 	u8	rpwm_retry;
 	uint	bSetPSModeWorkItemInProgress;

drivers/staging/rtl8712/rtl871x_xmit.h

@@ -233,9 +233,9 @@ struct	xmit_priv {
 	u8	hwxmit_entry;
 	u8	txirp_cnt;
 	struct tasklet_struct xmit_tasklet;
-	_workitem xmit_pipe4_reset_wi;
-	_workitem xmit_pipe6_reset_wi;
-	_workitem xmit_piped_reset_wi;
+	struct work_struct xmit_pipe4_reset_wi;
+	struct work_struct xmit_pipe6_reset_wi;
+	struct work_struct xmit_piped_reset_wi;
 	/*per AC pending irp*/
 	int beq_cnt;
 	int bkq_cnt;