spi: fsl-espi: fix merge conflict for commit "avoid processing uninitalized data on error"

Commit 5c0ba577 ("spi: fsl-espi: avoid processing uninitalized
data on error") applied fine to stable but caused a merge conflict
on next. This patch fixes that.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-fsl-espi.c

@@ -456,7 +456,7 @@ static void fsl_espi_cpu_irq(struct mpc8xxx_spi *mspi, u32 events)
 		mspi->len -= rx_nr_bytes;
 
 		if (rx_nr_bytes && mspi->rx) {
-			mspi->get_rx(rx_data, mspi);
+			*(u32 *)mspi->rx = rx_data;
 			mspi->rx += 4;
 		}
 	}