linux-imx

NTB: correct ntb_dev_ops and ntb_dev comment typos

The comment for ntb_dev_ops and ntb_dev incorrectly referred to
ntb_ctx_ops and ntb_device.

Signed-off-by: Wesley Sheng <wesley.sheng@microchip.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>