greybus: svc: use string choice helpers instead of ternary operator

Replace ternary operator with str_enabled_disabled() helper to improve
code readability and consistency.

Generated using Coccinelle semantic patch.

Signed-off-by: Nai-Chen Cheng <[e-mail]>
Reviewed-by: Alex Elder <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/greybus/svc.c

···
 #include <linux/kstrtox.h>
 #include <linux/workqueue.h>
 #include <linux/greybus.h>
+#include <linux/string_choices.h>
 
 #define SVC_INTF_EJECT_TIMEOUT		9000
 #define SVC_INTF_ACTIVATE_TIMEOUT	6000
···
 	struct gb_svc *svc = to_gb_svc(dev);
 
 	return sprintf(buf, "%s\n",
-		       gb_svc_watchdog_enabled(svc) ? "enabled" : "disabled");
+		       str_enabled_disabled(gb_svc_watchdog_enabled(svc)));
 }
 
 static ssize_t watchdog_store(struct device *dev,