kernel: fix typo in hwmon.mk (#18813)

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44120 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/kernel/linux/modules/hwmon.mk

@@ -46,7 +46,7 @@ $(eval $(call KernelPackage,hwmon-vid))
 
 define KernelPackage/hwmon-adt7410
   TITLE:=ADT7410 monitoring support
-ifeq ($(CONFIG_LINUX_3_8)),)
+ifeq ($(CONFIG_LINUX_3_8),)
   KCONFIG:= \
 	CONFIG_SENSORS_ADT7X10 \
 	CONFIG_SENSORS_ADT7410