clk: imx: implement new clk_hw based APIs

Clock providers are recommended to use the new struct clk_hw based API,
so implement IMX clk_hw based provider helpers functions to the new
approach.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/imx/clk.c

@@ -18,6 +18,16 @@ void __init imx_check_clocks(struct clk *clks[], unsigned int count)
 			       i, PTR_ERR(clks[i]));
 }
 
+void imx_check_clk_hws(struct clk_hw *clks[], unsigned int count)
+{
+	unsigned int i;
+
+	for (i = 0; i < count; i++)
+		if (IS_ERR(clks[i]))
+			pr_err("i.MX clk %u: register failed with %ld\n",
+			       i, PTR_ERR(clks[i]));
+}
+
 static struct clk * __init imx_obtain_fixed_clock_from_dt(const char *name)
 {
 	struct of_phandle_args phandle;
@@ -49,6 +59,18 @@ struct clk * __init imx_obtain_fixed_clock(
 	return clk;
 }
 
+struct clk_hw * __init imx_obtain_fixed_clk_hw(struct device_node *np,
+					       const char *name)
+{
+	struct clk *clk;
+
+	clk = of_clk_get_by_name(np, name);
+	if (IS_ERR(clk))
+		return ERR_PTR(-ENOENT);
+
+	return __clk_get_hw(clk);
+}
+
 /*
  * This fixups the register CCM_CSCMR1 write value.
  * The write/read/divider values of the aclk_podf field