platform/x86: Typo fix in the file classmate-laptop.c

s/derefence/dereference/
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@cascardo.eti.br>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20210317084343.3788084-1-unixbhaskar@gmail.comSigned-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/classmate-laptop.c

@@ -956,7 +956,7 @@ static int cmpc_ipml_add(struct acpi_device *acpi)
 	/*
 	 * If RFKILL is disabled, rfkill_alloc will return ERR_PTR(-ENODEV).
 	 * This is OK, however, since all other uses of the device will not
-	 * derefence it.
+	 * dereference it.
 	 */
 	if (ipml->rf) {
 		retval = rfkill_register(ipml->rf);