env: Rename eth_getenv_enetaddr() to eth_env_get_enetaddr()

Rename this function for consistency with env_get().

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c
index f8c8bff..c2d2e8e8 100644
--- a/board/davinci/da8xxevm/da850evm.c
+++ b/board/davinci/da8xxevm/da850evm.c
@@ -131,7 +131,7 @@
 	uchar env_enetaddr[6];
 	int enetaddr_found;
 
-	enetaddr_found = eth_getenv_enetaddr("ethaddr", env_enetaddr);
+	enetaddr_found = eth_env_get_enetaddr("ethaddr", env_enetaddr);
 
 #ifdef CONFIG_MAC_ADDR_IN_SPIFLASH
 	int spi_mac_read;