board: atmel: sama7g5ek: add support for MAC address retreival

Obtain two MAC addresses from the two EEPROMs and configure the two
available Ethernet interfaces accordingly.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>

board/atmel/sama7g5ek/sama7g5ek.c

@@ -46,6 +46,19 @@ int board_early_init_f(void)
 	return 0;
 }
 
+#define MAC24AA_MAC_OFFSET     0xfa
+
+#if (IS_ENABLED(CONFIG_MISC_INIT_R))
+int misc_init_r(void)
+{
+#if (IS_ENABLED(CONFIG_I2C_EEPROM))
+	at91_set_ethaddr(MAC24AA_MAC_OFFSET);
+	at91_set_eth1addr(MAC24AA_MAC_OFFSET);
+#endif
+	return 0;
+}
+#endif
+
 int board_init(void)
 {
 	/* address of boot parameters */
@@ -61,8 +74,3 @@ int dram_init(void)
 	return 0;
 }
 
-int misc_init_r(void)
-{
-	return 0;
-}
-