configs/globalscale_espressobin: new defconfig

Basic support for the Marvell ESPRESSObin, by Globalscale Technologies.

  http://espressobin.net



The kernel config has been extended with a fragment to enable switchcore
support, DSA drivers, and VLAN filtering in the bridge.  To make use of
this you need a custom libnl based application, or the iproute2 suite
rather than the brctl tools, which don't support the VLAN filtering.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>