sh: clkfwk: Add a followparent_recalc() helper.

This adds a followparent_recalc() helper for clocks that just follow the
parent's rate. Switch over the few CPUs that use this scheme for some of
their clocks.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/include/asm/clock.h

@@ -44,7 +44,7 @@ int __init arch_clk_init(void);
 
 /* arch/sh/kernel/cpu/clock.c */
 int clk_init(void);
-
+unsigned long followparent_recalc(struct clk *clk);
 void clk_recalc_rate(struct clk *);
 
 int clk_register(struct clk *);