watchdog: bcm47xx_wdt: constify bcm47xx_wdt_hard_ops and bcm47xx_wdt_soft_ops

File size before:
   text	   data	    bss	    dec	    hex	filename
   1282	    388	      1	   1671	    687	drivers/watchdog/bcm47xx_wdt.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   1474	    196	      1	   1671	    687	drivers/watchdog/bcm47xx_wdt.o
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

drivers/watchdog/bcm47xx_wdt.c

@@ -97,7 +97,7 @@ static int bcm47xx_wdt_restart(struct watchdog_device *wdd,
 	return 0;
 }
 
-static struct watchdog_ops bcm47xx_wdt_hard_ops = {
+static const struct watchdog_ops bcm47xx_wdt_hard_ops = {
 	.owner		= THIS_MODULE,
 	.start		= bcm47xx_wdt_hard_start,
 	.stop		= bcm47xx_wdt_hard_stop,
@@ -168,7 +168,7 @@ static const struct watchdog_info bcm47xx_wdt_info = {
 				WDIOF_MAGICCLOSE,
 };
 
-static struct watchdog_ops bcm47xx_wdt_soft_ops = {
+static const struct watchdog_ops bcm47xx_wdt_soft_ops = {
 	.owner		= THIS_MODULE,
 	.start		= bcm47xx_wdt_soft_start,
 	.stop		= bcm47xx_wdt_soft_stop,