net: asix: Move declaration of ax88172a_info to shared header

Ensure that the definition of ax88172a_info matches the declaration seen
by users and silence sparse warnings about symbols without declarations
in the global namespace by moving the declaration into the shared header
asix.h.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/usb/asix.h b/drivers/net/usb/asix.h
index 346c032..bdaa12d 100644
--- a/drivers/net/usb/asix.h
+++ b/drivers/net/usb/asix.h
@@ -178,6 +178,8 @@
 	struct asix_rx_fixup_info rx_fixup_info;
 };
 
+extern const struct driver_info ax88172a_info;
+
 /* ASIX specific flags */
 #define FLAG_EEPROM_MAC		(1UL << 0)  /* init device MAC from eeprom */