spi: npcm-pspi: Fix wrong priv pointer

In npcm_pspi_probe(), current code set platform_set_drvdata(pdev, master);
so in npcm_pspi_remove() platform_get_drvdata(pdev) will return pointer to
master rather than priv. Fix it.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-npcm-pspi.c

@@ -465,7 +465,8 @@ static int npcm_pspi_probe(struct platform_device *pdev)
 
 static int npcm_pspi_remove(struct platform_device *pdev)
 {
-	struct npcm_pspi *priv = platform_get_drvdata(pdev);
+	struct spi_master *master = platform_get_drvdata(pdev);
+	struct npcm_pspi *priv = spi_master_get_devdata(master);
 
 	npcm_pspi_reset_hw(priv);
 	clk_disable_unprepare(priv->clk);