sh: add sh7724 kick callback to clk_div4_table

This patch adds a ->kick() callback to clk_div4_table
and ties it into sh_clk_div4_set_rate(). A sh7724
specific kick function is also added that updates the
KICK bit whenever div4 clocks in FRQCRA and FRQCRB
have been set. Allows us to set the VPU clock.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/kernel/cpu/clock-cpg.c

@@ -188,6 +188,7 @@ static int sh_clk_div4_set_parent(struct clk *clk, struct clk *parent)
 
 static int sh_clk_div4_set_rate(struct clk *clk, unsigned long rate, int algo_id)
 {
+	struct clk_div4_table *d4t = clk->priv;
 	unsigned long value;
 	int idx = clk_rate_table_find(clk, clk->freq_table, rate);
 	if (idx < 0)
@@ -198,6 +199,9 @@ static int sh_clk_div4_set_rate(struct clk *clk, unsigned long rate, int algo_id
 	value |= (idx << clk->enable_bit);
 	__raw_writel(value, clk->enable_reg);
 
+	if (d4t->kick)
+		d4t->kick(clk);
+
 	return 0;
 }