hwmon: Document temp[1-*]_min_hyst sysfs attribute

The temp[1-*]_min_hyst sysfs attribute is already implemented by 3
hwmon drivers (adt7x10, lm77 and lm92) but was missing from the
standard interface.

Also add temp[1-*]_lcrit_hyst for consistency, even though no driver
implement that one for the time being.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>

Documentation/hwmon/sysfs-interface

@@ -327,6 +327,13 @@ temp[1-*]_max_hyst
 		from the max value.
 		RW
 
+temp[1-*]_min_hyst
+		Temperature hysteresis value for min limit.
+		Unit: millidegree Celsius
+		Must be reported as an absolute temperature, NOT a delta
+		from the min value.
+		RW
+
 temp[1-*]_input Temperature input value.
 		Unit: millidegree Celsius
 		RO
@@ -362,6 +369,13 @@ temp[1-*]_lcrit	Temperature critical min value, typically lower than
 		Unit: millidegree Celsius
 		RW
 
+temp[1-*]_lcrit_hyst
+		Temperature hysteresis value for critical min limit.
+		Unit: millidegree Celsius
+		Must be reported as an absolute temperature, NOT a delta
+		from the critical min value.
+		RW
+
 temp[1-*]_offset
 		Temperature offset which is added to the temperature reading
 		by the chip.