Blackfin arch: change get_bf537_ether_addr() to bfin_get_ether_addr() since this is not BF537 specific and to better match other Blackfin-specific conventions

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

diff --git a/drivers/net/bfin_mac.h b/drivers/net/bfin_mac.h
index 3a107ad..5970ea7 100644
--- a/drivers/net/bfin_mac.h
+++ b/drivers/net/bfin_mac.h
@@ -92,4 +92,4 @@
 	struct mii_bus mii_bus;
 };
 
-extern void get_bf537_ether_addr(char *addr);
+extern void bfin_get_ether_addr(char *addr);