bdinfo: arc: Use the generic bd command

There is nothing new in the arc 'bd' command beyond what is already there.
Switch it over to use the generic code.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/cmd/bdinfo.c b/cmd/bdinfo.c
index 996fb5d..d2dcda9 100644
--- a/cmd/bdinfo.c
+++ b/cmd/bdinfo.c
@@ -217,17 +217,7 @@
 
 #elif defined(CONFIG_ARC)
 
-int do_bdinfo(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
-{
-	bd_t *bd = gd->bd;
-
-	print_bi_mem(bd);
-	print_eth_ip_addr();
-	print_baudrate();
-	print_cpu_word_size();
-
-	return 0;
-}
+#define USE_GENERIC
 
 #elif defined(CONFIG_XTENSA)