kernel: make hwmon-lm75 only depend on kmod-thermal if needed

This fixes commit r42529 and closes #17855.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 42531

package/kernel/linux/modules/hwmon.mk

@@ -119,7 +119,7 @@ define KernelPackage/hwmon-lm75
   KCONFIG:=CONFIG_SENSORS_LM75
   FILES:=$(LINUX_DIR)/drivers/hwmon/lm75.ko
   AUTOLOAD:=$(call AutoProbe,lm75)
-  $(call AddDepends/hwmon,+kmod-i2c-core +kmod-thermal)
+  $(call AddDepends/hwmon,+kmod-i2c-core +PACKAGE_kmod-thermal:kmod-thermal)
 endef
 
 define KernelPackage/hwmon-lm75/description