clk: renesas: Add Gen2 clock core

Add common clock code for Renesas RCar Gen2 platforms.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/drivers/clk/renesas/renesas-cpg-mssr.h b/drivers/clk/renesas/renesas-cpg-mssr.h
index 2bd98bc..c19a466 100644
--- a/drivers/clk/renesas/renesas-cpg-mssr.h
+++ b/drivers/clk/renesas/renesas-cpg-mssr.h
@@ -23,9 +23,12 @@
 	unsigned int			mstp_table_size;
 	const char			*reset_node;
 	const char			*extalr_node;
+	const char			*extal_usb_node;
 	unsigned int			mod_clk_base;
 	unsigned int			clk_extal_id;
 	unsigned int			clk_extalr_id;
+	unsigned int			clk_extal_usb_id;
+	unsigned int			pll0_div;
 	const void			*(*get_pll_config)(const u32 cpg_mode);
 };