hwmon: (core) Add hwmon_in_enable attribute

According to hwmon ABI, in%d_enable is a sysfs interface that
allows user space to enable and disable the input sensor. So
this patch just simply adds the attribute to the list.

Signed-off-by: Nicolin Chen <[e-mail]>
Signed-off-by: Guenter Roeck <[e-mail]>

drivers/hwmon/hwmon.c

···
 	[hwmon_in_max_alarm] = "in%d_max_alarm",
 	[hwmon_in_lcrit_alarm] = "in%d_lcrit_alarm",
 	[hwmon_in_crit_alarm] = "in%d_crit_alarm",
+	[hwmon_in_enable] = "in%d_enable",
 };
 
 static const char * const hwmon_curr_attr_templates[] = {

include/linux/hwmon.h

···
 	hwmon_in_max_alarm,
 	hwmon_in_lcrit_alarm,
 	hwmon_in_crit_alarm,
+	hwmon_in_enable,
 };
 
 #define HWMON_I_INPUT		BIT(hwmon_in_input)
···
 #define HWMON_I_MAX_ALARM	BIT(hwmon_in_max_alarm)
 #define HWMON_I_LCRIT_ALARM	BIT(hwmon_in_lcrit_alarm)
 #define HWMON_I_CRIT_ALARM	BIT(hwmon_in_crit_alarm)
+#define HWMON_I_ENABLE		BIT(hwmon_in_enable)
 
 enum hwmon_curr_attributes {
 	hwmon_curr_input,