ftwdt010_wdt: move header to include/faraday and enhance

1. Move header to include/faraday
2. Fix include path in ftwdt010_wdt.c
3. Fix function prototype and declaration to
  - ftwdt010_wdt_settimeout
  - ftwdt010_wdt_reset
  - ftwdt010_wdt_disable
4. Add "#if definde (CONFIG_HW_WATCHDOG)" let user have flexibilty
  to choose which better to his product.

Signed-off-by: Macpaul Lin <macpaul@andestech.com>

drivers/watchdog/ftwdt010_wdt.c

@@ -29,13 +29,13 @@
 #include <common.h>
 #include <watchdog.h>
 #include <asm/io.h>
-#include "ftwdt010_wdt.h"
+#include <faraday/ftwdt010_wdt.h>
 
 /*
  * Set the watchdog time interval.
  * Counter is 32 bit.
  */
-static int ftwdt010_wdt_settimeout(unsigned int timeout)
+int ftwdt010_wdt_settimeout(unsigned int timeout)
 {
 	unsigned int reg;
 
@@ -61,7 +61,7 @@ static int ftwdt010_wdt_settimeout(unsigned int timeout)
 	return 0;
 }
 
-void ftwdt010_wdt_reset()
+void ftwdt010_wdt_reset(void)
 {
 	struct ftwdt010_wdt *wd = (struct ftwdt010_wdt *)CONFIG_FTWDT010_BASE;
 
@@ -75,7 +75,7 @@ void ftwdt010_wdt_reset()
 	writel((FTWDT010_WDCR_RST | FTWDT010_WDCR_ENABLE), &wd->wdcr);
 }
 
-void ftwdt010_wdt_disable()
+void ftwdt010_wdt_disable(void)
 {
 	struct ftwdt010_wdt *wd = (struct ftwdt010_wdt *)CONFIG_FTWDT010_BASE;
 
@@ -90,7 +90,8 @@ void ftwdt010_wdt_disable()
 	writel(0, &wd->wdcr);
 }
 
-void hw_watchdog_reset()
+#if defined(CONFIG_HW_WATCHDOG)
+void hw_watchdog_reset(void)
 {
 	ftwdt010_wdt_reset();
 }
@@ -100,3 +101,4 @@ void hw_watchdog_init(void)
 	/* set timer in ms */
 	ftwdt010_wdt_settimeout(CONFIG_FTWDT010_HW_TIMEOUT * 1000);
 }
+#endif

include/faraday/ftwdt010_wdt.h

@@ -100,4 +100,7 @@ struct ftwdt010_wdt {
  */
 #define FTWDT010_TIMEOUT_FACTOR		(CONFIG_SYS_CLK_FREQ / 1000) /* 1 ms */
 
+void ftwdt010_wdt_reset(void);
+void ftwdt010_wdt_disable(void);
+
 #endif /* __FTWDT010_H */