Documentation: mips/ingenic-tcu: eliminate duplicated word

Drop the doubled word "to".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Paul Cercueil <paul@crapouillou.net>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Link: https://lore.kernel.org/r/20200707180414.10467-14-rdunlap@infradead.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/mips/ingenic-tcu.rst

@@ -5,7 +5,7 @@ Ingenic JZ47xx SoCs Timer/Counter Unit hardware
 ===============================================
 
 The Timer/Counter Unit (TCU) in Ingenic JZ47xx SoCs is a multi-function
-hardware block. It features up to to eight channels, that can be used as
+hardware block. It features up to eight channels, that can be used as
 counters, timers, or PWM.
 
 - JZ4725B, JZ4750, JZ4755 only have six TCU channels. The other SoCs all