clk: nxp: fix typo in comment

Spelling mistake (triple letters) in comment.
Detected with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>

Link: https://lore.kernel.org/r/20220521111145.81697-42-Julia.Lawall@inria.fr
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: JuliaLawall

drivers/clk/nxp/clk-lpc18xx-cgu.c

@@ -606,7 +606,7 @@ static void __init lpc18xx_cgu_register_source_clks(struct device_node *np,
 	if (IS_ERR(clk))
 		pr_warn("%s: failed to register irc clk\n", __func__);
 
-	/* Register crystal oscillator controlller */
+	/* Register crystal oscillator controller */
 	parents[0] = of_clk_get_parent_name(np, 0);
 	clk = clk_register_gate(NULL, clk_src_names[CLK_SRC_OSC], parents[0],
 				0, base + LPC18XX_CGU_XTAL_OSC_CTRL,