After switch to linux 4.9.14, make oldconfig run by OE was disabling
CONFIG_IP_NF_TARGET_MASQUERADE even if original defconfig had it enabled
as a module. This target is required for osmo-ggsn.
According to documentation, they are deprecated by
KERNEL_MODULE_AUTOLOAD:
WARNING: linux-sysmocom-4.9.14+gitAUTOINC+8d5d275254-r1 do_package: module_autoload_leds-gpio was replaced by KERNEL_MODULE_AUTOLOAD for cases where basename == module name, please drop it