clk: imx: pllv2: Switch to clk_hw based API

Switch the imx_clk_pllv2 register function to clk_hw based API, rename
accordingly and add a macro for clk based legacy. This allows us to
move closer to a clear split between consumer and provider clk APIs.

Signed-off-by: Abel Vesa <[e-mail]>
Reviewed-by: Peng Fan <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

drivers/clk/imx/clk-pllv2.c

···
 	.set_rate = clk_pllv2_set_rate,
 };
 
-struct clk *imx_clk_pllv2(const char *name, const char *parent,
+struct clk_hw *imx_clk_hw_pllv2(const char *name, const char *parent,
 		void __iomem *base)
 {
 	struct clk_pllv2 *pll;
-	struct clk *clk;
+	struct clk_hw *hw;
 	struct clk_init_data init;
+	int ret;
 
 	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
 	if (!pll)
···
 	init.num_parents = 1;
 
 	pll->hw.init = &init;
+	hw = &pll->hw;
 
-	clk = clk_register(NULL, &pll->hw);
-	if (IS_ERR(clk))
+	ret = clk_hw_register(NULL, hw);
+	if (ret) {
 		kfree(pll);
+		return ERR_PTR(ret);
+	}
 
-	return clk;
+	return hw;
 }

drivers/clk/imx/clk.h

···
 #define imx_clk_pllv1(type, name, parent, base) \
 	to_clk(imx_clk_hw_pllv1(type, name, parent, base))
 
+#define imx_clk_pllv2(name, parent, base) \
+	to_clk(imx_clk_hw_pllv2(name, parent, base))
+
 struct clk *imx_clk_pll14xx(const char *name, const char *parent_name,
 		 void __iomem *base, const struct imx_pll14xx_clk *pll_clk);
 
 struct clk_hw *imx_clk_hw_pllv1(enum imx_pllv1_type type, const char *name,
 		const char *parent, void __iomem *base);
 
-struct clk *imx_clk_pllv2(const char *name, const char *parent,
+struct clk_hw *imx_clk_hw_pllv2(const char *name, const char *parent,
 		void __iomem *base);
 
 struct clk *imx_clk_frac_pll(const char *name, const char *parent_name,