libnl: minor package fixes

* libnl fails to build with multiple jobs so keep make at -j1
* Multiple libraries are installed so update uninstall target for this

[Peter: remove libnl/libnl-*.* to catch subdir + any new libs in the future]
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/libnl/libnl.mk

@@ -9,9 +9,11 @@ LIBNL_SOURCE = libnl-$(LIBNL_VERSION).tar.gz
 LIBNL_SITE = http://www.infradead.org/~tgr/libnl/files/
 LIBNL_INSTALL_STAGING = YES
 LIBNL_DEPENDENCIES = host-bison
+LIBNL_MAKE = $(MAKE1)
 
 define LIBNL_UNINSTALL_TARGET_CMDS
-	rm -f $(TARGET_DIR)/usr/lib/libnl.so*
+	rm -r $(TARGET_DIR)/usr/lib/libnl.* $(TARGET_DIR)/usr/lib/libnl-*.*
+	rm -rf $(TARGET_DIR)/usr/lib/libnl
 endef
 
 $(eval $(call AUTOTARGETS,package,libnl))