net: Remove all calls to net_random_ethaddr()

Remove the calls to net_random_ethaddr() that some boards and some
drivers are calling. This is now implemented inside of net/eth.c

Enable the feature for all boards that previously enabled it.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-By: Michael Walle <michael@walle.cc> (for the lsxl board part)

Series-changes: 2
-Fixed bfin build errors
diff --git a/board/cm-bf527/cm-bf527.c b/board/cm-bf527/cm-bf527.c
index 2871fa2..3186c67 100644
--- a/board/cm-bf527/cm-bf527.c
+++ b/board/cm-bf527/cm-bf527.c
@@ -26,8 +26,6 @@
 #ifdef CONFIG_BFIN_MAC
 static void board_init_enetaddr(uchar *mac_addr)
 {
-	bool valid_mac = false;
-
 	/* the MAC is stored in OTP memory page 0xDF */
 	uint32_t ret;
 	uint64_t otp_mac;
@@ -40,15 +38,8 @@
 			mac_addr[ret] = otp_mac_p[5 - ret];
 
 		if (is_valid_ethaddr(mac_addr))
-			valid_mac = true;
+			eth_setenv_enetaddr("ethaddr", mac_addr);
 	}
-
-	if (!valid_mac) {
-		puts("Warning: Generating 'random' MAC address\n");
-		net_random_ethaddr(mac_addr);
-	}
-
-	eth_setenv_enetaddr("ethaddr", mac_addr);
 }
 
 int board_eth_init(bd_t *bis)