clk: versatile: pass a parent to the ICST clock

As we want to actually define the parent frequency in the device
tree for the ICST clocks, modify the clock registration function
to take a parent argument.

Cc: Mike Turquette <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/clk/versatile/clk-icst.c

···
 struct clk *icst_clk_register(struct device *dev,
 			const struct clk_icst_desc *desc,
 			const char *name,
+			const char *parent_name,
 			void __iomem *base)
 {
 	struct clk *clk;

drivers/clk/versatile/clk-icst.h

···
 struct clk *icst_clk_register(struct device *dev,
 			      const struct clk_icst_desc *desc,
 			      const char *name,
+			      const char *parent_name,
 			      void __iomem *base);

drivers/clk/versatile/clk-impd1.c

···
 	imc = &impd1_clks[id];
 
 	imc->vco1name = kasprintf(GFP_KERNEL, "lm%x-vco1", id);
-	clk = icst_clk_register(NULL, &impd1_icst1_desc, imc->vco1name, base);
+	clk = icst_clk_register(NULL, &impd1_icst1_desc, imc->vco1name, NULL,
+				base);
 	imc->vco1clk = clk;
 	imc->clks[0] = clkdev_alloc(clk, NULL, "lm%x:01000", id);
 
 	/* VCO2 is also called "CLK2" */
 	imc->vco2name = kasprintf(GFP_KERNEL, "lm%x-vco2", id);
-	clk = icst_clk_register(NULL, &impd1_icst2_desc, imc->vco2name, base);
+	clk = icst_clk_register(NULL, &impd1_icst2_desc, imc->vco2name, NULL,
+				base);
 	imc->vco2clk = clk;
 
 	/* MMCI uses CLK2 right off */

drivers/clk/versatile/clk-integrator.c

···
 	struct clk *clk = ERR_PTR(-EINVAL);
 	const char *clk_name = np->name;
 	const struct clk_icst_desc *desc = &cm_auxosc_desc;
+	const char *parent_name;
 
 	if (!cm_base) {
 		/* Remap the core module base if not done yet */
···
 		}
 	}
 
-	clk = icst_clk_register(NULL, desc, clk_name, cm_base);
+	parent_name = of_clk_get_parent_name(np, 0);
+	clk = icst_clk_register(NULL, desc, clk_name, parent_name, cm_base);
 	if (!IS_ERR(clk))
 		of_clk_add_provider(np, of_clk_src_simple_get, clk);
 }

drivers/clk/versatile/clk-realview.c

···
 	/* ICST VCO clock */
 	if (is_pb1176)
 		clk = icst_clk_register(NULL, &realview_osc0_desc,
-					"osc0", sysbase);
+					"osc0", NULL, sysbase);
 	else
 		clk = icst_clk_register(NULL, &realview_osc4_desc,
-					"osc4", sysbase);
+					"osc4", NULL, sysbase);
 
 	clk_register_clkdev(clk, NULL, "dev:clcd");
 	clk_register_clkdev(clk, NULL, "issp:clcd");