hwmon: (emc2305) fix kernel-doc warnings

hwmon: (emc2305) fix kernel-doc warnings

Fix kernel-doc warnings:
drivers/hwmon/emc2305.c:62: warning: Cannot understand  * @cdev: cooling device;
 on line 62 - I thought it was a doc line
drivers/hwmon/emc2305.c:89: warning: Cannot understand  * @client: i2c client;
 on line 89 - I thought it was a doc line

and drop ';' at end of each struct member line.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-hwmon@vger.kernel.org
Link: https://lore.kernel.org/r/20230113064540.20179-1-rdunlap@infradead.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>