netsnmp: ensure lm-sensors is available if enabled

The ucd-snmp/lmsensorsMib module uses lm-sensors, so ensure netsnmp is built
after lm-sensors if enabled.

As the list of mib modules to built is configured using a string option in
Kconfig, we cannot easily select lm-sensors from the netsnmp package - But
we can at least ensure it gets built before hand if enabled.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/netsnmp/netsnmp.mk

@@ -67,6 +67,11 @@ ifeq ($(BR2_PACKAGE_PCIUTILS),y)
 NETSNMP_DEPENDENCIES += pciutils
 endif
 
+# For ucd-snmp/lmsensorsMib
+ifeq ($(BR2_PACKAGE_LM_SENSORS),y)
+NETSNMP_DEPENDENCIES += lm-sensors
+endif
+
 ifneq ($(BR2_PACKAGE_NETSNMP_ENABLE_MIBS),y)
 NETSNMP_CONF_OPTS += --disable-mib-loading
 NETSNMP_CONF_OPTS += --disable-mibs