staging: rtl8192u: make in r819xU_firmware.c some local functions static

Make some local functions static (firmware_init_param, fw_download_code,
CPUcheck_maincodeok_turnonCPU and CPUcheck_firmware_ready) and fix
coding style in these function declarations when It is necessary.

Fixed the following sparse warnings in r819xU_firmware.c

CHECK drivers/staging/rtl8192u/r819xU_firmware.c
drivers/staging/rtl8192u/r819xU_firmware.c:20:6: warning: symbol 'firmware_init_param' was not declared. Should it be static?
drivers/staging/rtl8192u/r819xU_firmware.c:32:6: warning: symbol 'fw_download_code' was not declared. Should it be static?
drivers/staging/rtl8192u/r819xU_firmware.c:159:6: warning: symbol 'CPUcheck_maincodeok_turnonCPU' was not declared. Should it be static?
drivers/staging/rtl8192u/r819xU_firmware.c:208:6: warning: symbol 'CPUcheck_firmware_ready' was not declared. Should it be static?

Signed-off-by: Ana Rey <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/rtl8192u/r819xU_firmware.c

···
 #include "r819xU_firmware_img.h"
 #include "r819xU_firmware.h"
 #include <linux/firmware.h>
-void firmware_init_param(struct net_device *dev)
+
+static void firmware_init_param(struct net_device *dev)
 {
 	struct r8192_priv	*priv = ieee80211_priv(dev);
 	rt_firmware		*pfirmware = priv->pFirmware;
···
  * segment the img and use the ptr and length to remember info on each segment
  *
  */
-bool fw_download_code(struct net_device *dev, u8 *code_virtual_address, u32 buffer_len)
+static bool fw_download_code(struct net_device *dev, u8 *code_virtual_address,
+			     u32 buffer_len)
 {
 	struct r8192_priv   *priv = ieee80211_priv(dev);
 	bool		    rt_status = true;
···
 //        NDIS_STATUS_FAILURE - the following initialization process should be terminated
 //        NDIS_STATUS_SUCCESS - if firmware initialization process success
 //-----------------------------------------------------------------------------
-bool CPUcheck_maincodeok_turnonCPU(struct net_device *dev)
+static bool CPUcheck_maincodeok_turnonCPU(struct net_device *dev)
 {
 	bool		rt_status = true;
 	int		check_putcodeOK_time = 200000, check_bootOk_time = 200000;
···
 	return rt_status;
 }
 
-bool CPUcheck_firmware_ready(struct net_device *dev)
+static bool CPUcheck_firmware_ready(struct net_device *dev)
 {
 
 	bool		rt_status = true;