dmaengine: linux/dmaengine.h: drop duplicated word in a comment

Drop the doubled word "has" in a comment.

Signed-off-by: Randy Dunlap <[e-mail]>
Cc: Vinod Koul <[e-mail]>
Cc: [e-mail]
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

include/linux/dmaengine.h

···
  * @DMA_PREP_INTERRUPT - trigger an interrupt (callback) upon completion of
  *  this transaction
  * @DMA_CTRL_ACK - if clear, the descriptor cannot be reused until the client
- *  acknowledges receipt, i.e. has has a chance to establish any dependency
+ *  acknowledges receipt, i.e. has a chance to establish any dependency
  *  chains
  * @DMA_PREP_PQ_DISABLE_P - prevent generation of P while generating Q
  * @DMA_PREP_PQ_DISABLE_Q - prevent generation of Q while generating P