clk: ux500: Support for prmcu_rate clock

The prmcu_rate clock is not gateable and has a rate which
only can be fetched.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
diff --git a/drivers/clk/ux500/clk.h b/drivers/clk/ux500/clk.h
index 32085aa..836d7d1 100644
--- a/drivers/clk/ux500/clk.h
+++ b/drivers/clk/ux500/clk.h
@@ -35,6 +35,11 @@
 			       u8 cg_sel,
 			       unsigned long flags);
 
+struct clk *clk_reg_prcmu_rate(const char *name,
+			       const char *parent_name,
+			       u8 cg_sel,
+			       unsigned long flags);
+
 struct clk *clk_reg_prcmu_opp_gate(const char *name,
 				   const char *parent_name,
 				   u8 cg_sel,