device.mk: add librmnetctl to PRODUCT_PACKAGES list.

In AU170 upgrade, data have change to prebuilt,
dependence is missing.

Change-Id: I67fbd468b41dbd4ef75d46c31246bba49527b125
diff --git a/device.mk b/device.mk
index 1977253..f10ee56 100755
--- a/device.mk
+++ b/device.mk
@@ -309,6 +309,10 @@
 PRODUCT_PACKAGES += \
    fs_config_files
 
+# For data
+PRODUCT_PACKAGES += \
+   librmnetctl
+
 PRODUCT_COPY_FILES += \
     device/huawei/angler/init.angler.diag.rc.userdebug:root/init.angler.diag.rc