msm: clock-debug.c: Display clock vdd fmax values

Display the voltage level a clock votes for debugging.
The currently selected level is shown in square brackets.

Change-Id: I5062c5ea05408c94b63a1eeb376c42da9b7e5908
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
diff --git a/arch/arm/mach-msm/clock.h b/arch/arm/mach-msm/clock.h
index ff0e973..d88466d 100644
--- a/arch/arm/mach-msm/clock.h
+++ b/arch/arm/mach-msm/clock.h
@@ -175,6 +175,7 @@
 void msm_clock_init(struct clock_init_data *data);
 int vote_vdd_level(struct clk_vdd_class *vdd_class, int level);
 int unvote_vdd_level(struct clk_vdd_class *vdd_class, int level);
+int find_vdd_level(struct clk *clk, unsigned long rate);
 
 #ifdef CONFIG_DEBUG_FS
 int clock_debug_init(struct clock_init_data *data);