boards: move board_get_enetaddr() into board-specific init

The environment is the canonical storage location of the mac address, so
we're killing off the global data location and moving everything to
querying the env directly.

Rather than have the common ppc code have board-specific hooks, move the
board_get_enetaddr() function into the board-specific init functions.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
CC: Ben Warren <biggerbadderben@gmail.com>
diff --git a/board/sandburst/karef/karef.c b/board/sandburst/karef/karef.c
index 9b94af5..55310d7 100644
--- a/board/sandburst/karef/karef.c
+++ b/board/sandburst/karef/karef.c
@@ -354,6 +354,7 @@
 {
 	unsigned short sernum;
 	char envstr[255];
+	uchar enetaddr[6];
 	KAREF_FPGA_REGS_ST *karef_ps;
 	OFEM_FPGA_REGS_ST *ofem_ps;
 
@@ -408,6 +409,34 @@
 		printf("fakeled is set. use 'setenv fakeled ; setenv bootdelay 5 ; saveenv' to recover\n");
 	}
 
+#ifdef CONFIG_HAS_ETH0
+	if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
+		board_get_enetaddr(0, enetaddr);
+		eth_putenv_enetaddr("ethaddr", enetaddr);
+	}
+#endif
+
+#ifdef CONFIG_HAS_ETH1
+	if (!eth_getenv_enetaddr("eth1addr", enetaddr)) {
+		board_get_enetaddr(1, enetaddr);
+		eth_putenv_enetaddr("eth1addr", enetaddr);
+	}
+#endif
+
+#ifdef CONFIG_HAS_ETH2
+	if (!eth_getenv_enetaddr("eth2addr", enetaddr)) {
+		board_get_enetaddr(2, enetaddr);
+		eth_putenv_enetaddr("eth2addr", enetaddr);
+	}
+#endif
+
+#ifdef CONFIG_HAS_ETH3
+	if (!eth_getenv_enetaddr("eth3addr", enetaddr)) {
+		board_get_enetaddr(3, enetaddr);
+		eth_putenv_enetaddr("eth3addr", enetaddr);
+	}
+#endif
+
 	return (0);
 }