clk: vt8500: Migrate to clk_hw based registration APIs

Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers while registering clks in
these drivers, allowing us to move closer to a clear split of
consumer and provider clk APIs.

Cc: Sebastian Hesselbarth <[e-mail]>
Cc: Tony Prisk <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/clk-vt8500.c

···
 static __init void vtwm_device_clk_init(struct device_node *node)
 {
 	u32 en_reg, div_reg;
-	struct clk *clk;
+	struct clk_hw *hw;
 	struct clk_device *dev_clk;
 	const char *clk_name = node->name;
 	const char *parent_name;
···
 
 	dev_clk->hw.init = &init;
 
-	clk = clk_register(NULL, &dev_clk->hw);
-	if (WARN_ON(IS_ERR(clk))) {
+	hw = &dev_clk->hw;
+	rc = clk_hw_register(NULL, hw);
+	if (WARN_ON(rc)) {
 		kfree(dev_clk);
 		return;
 	}
-	rc = of_clk_add_provider(node, of_clk_src_simple_get, clk);
-	clk_register_clkdev(clk, clk_name, NULL);
+	rc = of_clk_add_hw_provider(node, of_clk_hw_simple_get, hw);
+	clk_hw_register_clkdev(hw, clk_name, NULL);
 }
 CLK_OF_DECLARE(vt8500_device, "via,vt8500-device-clock", vtwm_device_clk_init);
 
···
 static __init void vtwm_pll_clk_init(struct device_node *node, int pll_type)
 {
 	u32 reg;
-	struct clk *clk;
+	struct clk_hw *hw;
 	struct clk_pll *pll_clk;
 	const char *clk_name = node->name;
 	const char *parent_name;
···
 
 	pll_clk->hw.init = &init;
 
-	clk = clk_register(NULL, &pll_clk->hw);
-	if (WARN_ON(IS_ERR(clk))) {
+	hw = &pll_clk->hw;
+	rc = clk_hw_register(NULL, &pll_clk->hw);
+	if (WARN_ON(rc)) {
 		kfree(pll_clk);
 		return;
 	}
-	rc = of_clk_add_provider(node, of_clk_src_simple_get, clk);
-	clk_register_clkdev(clk, clk_name, NULL);
+	rc = of_clk_add_hw_provider(node, of_clk_hw_simple_get, hw);
+	clk_hw_register_clkdev(hw, clk_name, NULL);
 }