spi: spi-zynqmp-gqspi: Correct a couple of misspellings in kerneldoc

Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-zynqmp-gqspi.c:205: warning: Function parameter or member 'slavecs' not described in 'zynqmp_gqspi_selectslave'
 drivers/spi/spi-zynqmp-gqspi.c:205: warning: Function parameter or member 'slavebus' not described in 'zynqmp_gqspi_selectslave'
 drivers/spi/spi-zynqmp-gqspi.c:205: warning: Excess function parameter 'flashcs' description in 'zynqmp_gqspi_selectslave'
 drivers/spi/spi-zynqmp-gqspi.c:205: warning: Excess function parameter 'flashbus' description in 'zynqmp_gqspi_selectslave'
 drivers/spi/spi-zynqmp-gqspi.c:902: warning: Function parameter or member 'dev' not described in 'zynqmp_qspi_suspend'
 drivers/spi/spi-zynqmp-gqspi.c:902: warning: Excess function parameter '_dev' description in 'zynqmp_qspi_suspend'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/20200717135424.2442271-11-lee.jones@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-zynqmp-gqspi.c

@@ -197,8 +197,8 @@ static inline void zynqmp_gqspi_write(struct zynqmp_qspi *xqspi, u32 offset,
 /**
  * zynqmp_gqspi_selectslave:	For selection of slave device
  * @instanceptr:	Pointer to the zynqmp_qspi structure
- * @flashcs:	For chip select
- * @flashbus:	To check which bus is selected- upper or lower
+ * @slavecs:	For chip select
+ * @slavebus:	To check which bus is selected- upper or lower
  */
 static void zynqmp_gqspi_selectslave(struct zynqmp_qspi *instanceptr,
 				     u8 slavecs, u8 slavebus)
@@ -892,7 +892,7 @@ static int zynqmp_qspi_start_transfer(struct spi_master *master,
 
 /**
  * zynqmp_qspi_suspend:	Suspend method for the QSPI driver
- * @_dev:	Address of the platform_device structure
+ * @dev:	Address of the platform_device structure
  *
  * This function stops the QSPI driver queue and disables the QSPI controller
  *