staging: rts5139: fix bad symbol declaration

With sparse, the following error appears :
  CHECK   drivers/staging/rts5139/ms_mg.c
drivers/staging/rts5139/ms_mg.c:82:5: warning: symbol 'mg_set_tpc_para_sub' was not declared. Should it be static?

Rename function with correct prefix and move declaration to coherent internal header file.

Signed-off-by: Neil 'Superna' Armstrong <superna9999@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rts5139/ms.c

@@ -36,6 +36,7 @@
 #include "rts51x_scsi.h"
 #include "rts51x_card.h"
 #include "ms.h"
+#include "ms_mg.h"
 
 static inline void ms_set_err_code(struct rts51x_chip *chip, u8 err_code)
 {
@@ -1183,10 +1184,6 @@ static int ms_read_attribute_info(struct rts51x_chip *chip)
 	return STATUS_SUCCESS;
 }
 
-#ifdef SUPPORT_MAGIC_GATE
-int mg_set_tpc_para_sub(struct rts51x_chip *chip, int type, u8 mg_entry_num);
-#endif
-
 static int reset_ms_pro(struct rts51x_chip *chip)
 {
 	struct ms_info *ms_card = &(chip->ms_card);
@@ -1232,7 +1229,7 @@ Retry:
 #endif
 
 #ifdef SUPPORT_MAGIC_GATE
-	retval = mg_set_tpc_para_sub(chip, 0, 0);
+	retval = rts51x_mg_set_tpc_para_sub(chip, 0, 0);
 	if (retval != STATUS_SUCCESS)
 		TRACE_RET(chip, retval);
 #endif

drivers/staging/rts5139/ms_mg.c

@@ -79,7 +79,7 @@ static int mg_send_ex_cmd(struct rts51x_chip *chip, u8 cmd, u8 entry_num)
 	return STATUS_SUCCESS;
 }
 
-int mg_set_tpc_para_sub(struct rts51x_chip *chip, int type, u8 mg_entry_num)
+int rts51x_mg_set_tpc_para_sub(struct rts51x_chip *chip, int type, u8 mg_entry_num)
 {
 	int retval;
 	u8 buf[6];

drivers/staging/rts5139/ms_mg.h

@@ -30,6 +30,7 @@
 #include "rts51x_chip.h"
 #include "ms.h"
 
+int rts51x_mg_set_tpc_para_sub(struct rts51x_chip *chip, int type, u8 mg_entry_num);
 int rts51x_mg_set_leaf_id(struct scsi_cmnd *srb, struct rts51x_chip *chip);
 int rts51x_mg_get_local_EKB(struct scsi_cmnd *srb, struct rts51x_chip *chip);
 int rts51x_mg_chg(struct scsi_cmnd *srb, struct rts51x_chip *chip);