pinctrl: aspeed: Fix typo in comment

Delete the redundant word 'and'.
Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Link: https://lore.kernel.org/r/20220618130854.12321-1-wangxiang@cdjrlc.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/aspeed/pinmux-aspeed.h

@@ -632,7 +632,7 @@ struct aspeed_pin_desc {
 	SIG_EXPR_LIST_ALIAS(pin, sig, group)
 
 /**
- * Similar to the above, but for pins with a dual expressions (DE) and
+ * Similar to the above, but for pins with a dual expressions (DE)
  * and a single group (SG) of pins.
  *
  * @pin: The pin the signal will be routed to