clk: armada-37xx: Set DM_FLAG_PRE_RELOC

Setting DM_FLAG_PRE_RELOC for Armada 3720 clock drivers (TBG and
peripheral clocks) makes it possible for serial driver to retrieve clock
rates via clk API.

Signed-off-by: Marek BehĂșn <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/clk/mvebu/armada-37xx-periph.c b/drivers/clk/mvebu/armada-37xx-periph.c
index b0f47c3..3b767d7 100644
--- a/drivers/clk/mvebu/armada-37xx-periph.c
+++ b/drivers/clk/mvebu/armada-37xx-periph.c
@@ -626,4 +626,5 @@
 	.ops		= &armada_37xx_periph_clk_ops,
 	.priv_auto	= sizeof(struct a37xx_periphclk),
 	.probe		= armada_37xx_periph_clk_probe,
+	.flags		= DM_FLAG_PRE_RELOC,
 };
diff --git a/drivers/clk/mvebu/armada-37xx-tbg.c b/drivers/clk/mvebu/armada-37xx-tbg.c
index b1c0852..054aff5 100644
--- a/drivers/clk/mvebu/armada-37xx-tbg.c
+++ b/drivers/clk/mvebu/armada-37xx-tbg.c
@@ -152,4 +152,5 @@
 	.ops		= &armada_37xx_tbg_clk_ops,
 	.priv_auto	= sizeof(struct a37xx_tbgclk),
 	.probe		= armada_37xx_tbg_clk_probe,
+	.flags		= DM_FLAG_PRE_RELOC,
 };