Each USB sample, when compiled, will provide a different
USB product string. A "nice to have" feature when trying
out the USB samples (they will show up differently in
`lsusb` or `dmesg`), and also illustrates how to set up
custom USB constants in the config files.
Requires #6589.
Signed-off-by: Iván Sánchez Ortega <ivan@sanchezortega.es>
This patch allows more generic USB configuration in the samples
and removes platform dependent driver configuration.
Signed-off-by: Johann Fischer <j.fischer@phytec.de>