dmaengine: acpi: Add kernel doc parameter descriptions

Kernel documentation script is not happy about absence of function parameter
descriptions:

drivers/dma/acpi-dma.c:163: warning: Function parameter or member 'data' not described in 'acpi_dma_controller_register'
drivers/dma/acpi-dma.c:247: warning: Function parameter or member 'data' not described in 'devm_acpi_dma_controller_register'
drivers/dma/acpi-dma.c:274: warning: Function parameter or member 'dev' not described in 'devm_acpi_dma_controller_free'

Append the descriptions of above mentioned function parameters.

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

drivers/dma/acpi-dma.c

···
  * @dev:		struct device of DMA controller
  * @acpi_dma_xlate:	translation function which converts a dma specifier
  *			into a dma_chan structure
- * @data		pointer to controller specific data to be used by
+ * @data:		pointer to controller specific data to be used by
  *			translation function
  *
  * Allocated memory should be freed with appropriate acpi_dma_controller_free()
···
  * devm_acpi_dma_controller_register - resource managed acpi_dma_controller_register()
  * @dev:		device that is registering this DMA controller
  * @acpi_dma_xlate:	translation function
- * @data		pointer to controller specific data
+ * @data:		pointer to controller specific data
  *
  * Managed acpi_dma_controller_register(). DMA controller registered by this
  * function are automatically freed on driver detach. See
···
 
 /**
  * devm_acpi_dma_controller_free - resource managed acpi_dma_controller_free()
+ * @dev:	device that is unregistering as DMA controller
  *
  * Unregister a DMA controller registered with
  * devm_acpi_dma_controller_register(). Normally this function will not need to