clk: ti: use kcalloc() instead of kzalloc()

Use 2-factor multiplication argument form kcalloc() instead
of kzalloc().

Link: KSPP#162
Signed-off-by: Ethan Carter Edwards <ethan@ethancedwards.com>
Link: https://lore.kernel.org/r/xfjn4wqrhukvi45dkgkbulamq3242eijn7567vxwaxznh4ebdr@waat7u3l2mhi
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: ethancedwards8

drivers/clk/ti/mux.c

@@ -180,7 +180,7 @@ static void of_mux_clk_setup(struct device_node *node)
 		pr_err("mux-clock %pOFn must have parents\n", node);
 		return;
 	}
-	parent_names = kzalloc((sizeof(char *) * num_parents), GFP_KERNEL);
+	parent_names = kcalloc(num_parents, sizeof(char *), GFP_KERNEL);
 	if (!parent_names)
 		goto cleanup;