usb: net: don't ifdef routine declarations in usb_ether.h

while compilation of implemented routines and references from calling
sites may be optional, declarations in header files should not be

unconditionally declare the Asix and SMSC related public USB ethernet
driver routines in the usb_ether.h header file

Signed-off-by: Gerhard Sittig <gsi@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Marek Vasut <marex@denx.de>
1 file changed