* split out rtl-nic firmware from the big
linux-firmware package
[hfreyther: For whatever reasons the NIC works without
additional firmware as well. I couldn't see in the driver
source when that is the case and which features are missing]
I wish I could have made it more simple but at least only compare
the 1.X of the poky version as minor versions generally do not
upgrade the core components
* use seperate defconfig, because of option changed from 2.6.39 to 3.10
* use python magic to switch between linux and linux-sysmocom
* add sysmocom-bsc to compatible machines for linux-sysmocom
* add new confiugration parameters for syslinux