Add a driver that makes use of the UEFI Simple Network Protocol to support network access when using the UEFI app implementation, and hook up the app code to instantiate it for probed devices. Signed-off-by: Matthew Garrett <mgarrett@aurora.tech> Reviewed-by: Simon Glass <sjg@chromium.org> Add include of linux/ctype in epautoconf.c and conditional net.h: Signed-off-by: Simon Glass <sjg@chromium.org>