spi/xilinx: Refer to platform device as pdev in probe() and remove()
spi/xilinx: Refer to platform device as pdev in probe() and remove()

This is a more traditional name and makes things a bit clearer when
referring to actual struct devices as we do frequently during probe().

Signed-off-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@linaro.org>
Acked-by: Michal Simek <b20e59da6aeb5cea6c82b021069d69f63616c55d@xilinx.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs