davinci: da850evm: Make EEPROM MAC code configurable

There was a check for CONFIG_MAC_ADDR_IN_EEPROM and
a check for CONFIG_MAC_ADDR_IN_SPIFLASH, however
some of the EEPROM related code wasn't encapsulated
inside the #if defined statement so the EEPROM code
could get executed even when it wasn't explicitly
enabled or wanted.

Signed-off-by: Adam Ford <aford173@gmail.com>

board/davinci/da8xxevm/da850evm.c

@@ -133,6 +133,8 @@ int misc_init_r(void)
 
 	enetaddr_found = eth_env_get_enetaddr("ethaddr", env_enetaddr);
 
+#endif
+
 #ifdef CONFIG_MAC_ADDR_IN_SPIFLASH
 	int spi_mac_read;
 	uchar buff[6];
@@ -167,7 +169,8 @@ int misc_init_r(void)
 					"with the MAC address in the environment\n");
 		printf("Default using MAC address from environment\n");
 	}
-#endif
+
+#elif defined(CONFIG_MAC_ADDR_IN_EEPROM)
 	uint8_t enetaddr[8];
 	int eeprom_mac_read;