hwmon: (coretemp) Introduce enum for attr index

BugLink: https://bugs.launchpad.net/bugs/2056126

Introduce enum coretemp_attr_index to better describe the index of each
sensor attribute.

No functional change.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Link: https://lore.kernel.org/r/20240202092144.71180-5-rui.zhang@intel.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
(cherry picked from commit c8c2074020a878ca6c6106a2cf224b536247e11a linux-next)
Acked-by: Andrei Gherzan <andrei.gherzan@canonical.com>
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>

drivers/hwmon/coretemp.c

@@ -43,10 +43,18 @@ MODULE_PARM_DESC(tjmax, "TjMax value in degrees Celsius");
 #define BASE_SYSFS_ATTR_NO	2	/* Sysfs Base attr no for coretemp */
 #define NUM_REAL_CORES		512	/* Number of Real cores per cpu */
 #define CORETEMP_NAME_LENGTH	28	/* String Length of attrs */
-#define MAX_CORE_ATTRS		4	/* Maximum no of basic attrs */
-#define TOTAL_ATTRS		(MAX_CORE_ATTRS + 1)
 #define MAX_CORE_DATA		(NUM_REAL_CORES + BASE_SYSFS_ATTR_NO)
 
+enum coretemp_attr_index {
+	ATTR_LABEL,
+	ATTR_CRIT_ALARM,
+	ATTR_TEMP,
+	ATTR_TJMAX,
+	ATTR_TTARGET,
+	MAX_CORE_ATTRS = ATTR_TJMAX + 1,	/* Maximum no of basic attrs */
+	TOTAL_ATTRS = ATTR_TTARGET + 1		/* Maximum no of possible attrs */
+};
+
 #ifdef CONFIG_SMP
 #define for_each_sibling(i, cpu) \
 	for_each_cpu(i, topology_sibling_cpumask(cpu))