MIPS: Alchemy: convert from round_rate() to determine_rate()

The round_rate() clk ops is deprecated, so migrate this driver from
round_rate() to determine_rate() using the Coccinelle semantic patch
appended to the "under-the-cut" portion of the patch.

Note that prior to running Coccinelle, alchemy_clk_aux_roundr() was
renamed to alchemy_clk_aux_round_rate(). A few minor style cleanups
were also done by hand.

Signed-off-by: Brian Masney <bmasney@redhat.com>
Tested-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

Author: masneyb

arch/mips/alchemy/common/clock.c

@@ -211,30 +211,34 @@ static int alchemy_clk_aux_setr(struct clk_hw *hw,
 	return 0;
 }
 
-static long alchemy_clk_aux_roundr(struct clk_hw *hw,
-					    unsigned long rate,
-					    unsigned long *parent_rate)
+static int alchemy_clk_aux_determine_rate(struct clk_hw *hw,
+					  struct clk_rate_request *req)
 {
 	struct alchemy_auxpll_clk *a = to_auxpll_clk(hw);
 	unsigned long mult;
 
-	if (!rate || !*parent_rate)
+	if (!req->rate || !req->best_parent_rate) {
+		req->rate = 0;
+
 		return 0;
+	}
 
-	mult = rate / (*parent_rate);
+	mult = req->rate / req->best_parent_rate;
 
 	if (mult && (mult < 7))
 		mult = 7;
 	if (mult > a->maxmult)
 		mult = a->maxmult;
 
-	return (*parent_rate) * mult;
+	req->rate = req->best_parent_rate * mult;
+
+	return 0;
 }
 
 static const struct clk_ops alchemy_clkops_aux = {
 	.recalc_rate	= alchemy_clk_aux_recalc,
 	.set_rate	= alchemy_clk_aux_setr,
-	.round_rate	= alchemy_clk_aux_roundr,
+	.determine_rate = alchemy_clk_aux_determine_rate,
 };
 
 static struct clk __init *alchemy_clk_setup_aux(const char *parent_name,