ACPICA: Clean up double word in comment

ACPICA commit 01f43b049722fa7613fca3c9fa657b150fae8ac1

Remove the second 'know' and 'than'.

Link: https://github.com/acpica/acpica/commit/01f43b04
Signed-off-by: Tom Rix <[e-mail]>
Signed-off-by: Bob Moore <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/acpi/acpica/exfldio.c

···
 #ifdef ACPI_UNDER_DEVELOPMENT
 	/*
 	 * If the Field access is any_acc, we can now compute the optimal
-	 * access (because we know know the length of the parent region)
+	 * access (because we know the length of the parent region)
 	 */
 	if (!(obj_desc->common.flags & AOPOBJ_DATA_VALID)) {
 		if (ACPI_FAILURE(status)) {

drivers/acpi/acpica/hwregs.c

···
  * RETURN:      Status
  *
  * DESCRIPTION: Write the PM1 A/B control registers. These registers are
- *              different than than the PM1 A/B status and enable registers
+ *              different than the PM1 A/B status and enable registers
  *              in that different values can be written to the A/B registers.
  *              Most notably, the SLP_TYP bits can be different, as per the
  *              values returned from the _Sx predefined methods.