net: punt bd->bi_ip_addr

This field gets read in one place (by "bdinfo"), and we can replace
that with getenv("ipaddr").  After all, the bi_ip_addr field is kept
up-to-date implicitly with the value of the ipaddr env var.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>

arch/sparc/lib/board.c

@@ -333,8 +333,6 @@ void board_init_f(ulong bootflag)
 	mac_read_from_eeprom();
 #endif
 
-	/* IP Address */
-	bd->bi_ip_addr = getenv_IPaddr("ipaddr");
 #if defined(CONFIG_PCI)
 	/*
 	 * Do pci configuration