MIPS: ath25: Convert random_ether_addr to eth_random_addr

random_ether_addr is a #define for eth_random_addr which is
generally preferred in kernel code by ~3:1

Convert the uses of random_ether_addr to enable removing the #define

Signed-off-by: Joe Perches <[e-mail]>
Signed-off-by: Paul Burton <[e-mail]>
Patchwork: https://patchwork.linux-mips.org/patch/19600/
Cc: Ralf Baechle <[e-mail]>
Cc: James Hogan <[e-mail]>
Cc: [e-mail]

arch/mips/ath25/board.c

···
 			pr_info("Fixing up empty mac addresses\n");
 			config->reset_config_gpio = 0xffff;
 			config->sys_led_gpio = 0xffff;
-			random_ether_addr(config->wlan0_mac);
+			eth_random_addr(config->wlan0_mac);
 			config->wlan0_mac[0] &= ~0x06;
-			random_ether_addr(config->enet0_mac);
-			random_ether_addr(config->enet1_mac);
+			eth_random_addr(config->enet0_mac);
+			eth_random_addr(config->enet1_mac);
 		}
 	}