spi: a3700: support BE for AC5 SPI driver

Signed-off-by: Noam <lnoam@marvell.com>
Tested-by: Raz Adashi <raza@marvell.com>
Reviewed-by: Raz Adashi <raza@marvell.com>
Signed-off-by: Vadym Kochan <vadym.kochan@plvision.eu>
Link: https://lore.kernel.org/r/20220726130038.20995-1-vadym.kochan@plvision.euSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-armada-3700.c

@@ -497,7 +497,7 @@ static int a3700_spi_fifo_write(struct a3700_spi *a3700_spi)
 
 	while (!a3700_is_wfifo_full(a3700_spi) && a3700_spi->buf_len) {
 		val = *(u32 *)a3700_spi->tx_buf;
-		spireg_write(a3700_spi, A3700_SPI_DATA_OUT_REG, val);
+		spireg_write(a3700_spi, A3700_SPI_DATA_OUT_REG, cpu_to_le32(val));
 		a3700_spi->buf_len -= 4;
 		a3700_spi->tx_buf += 4;
 	}
@@ -519,7 +519,7 @@ static int a3700_spi_fifo_read(struct a3700_spi *a3700_spi)
 	while (!a3700_is_rfifo_empty(a3700_spi) && a3700_spi->buf_len) {
 		val = spireg_read(a3700_spi, A3700_SPI_DATA_IN_REG);
 		if (a3700_spi->buf_len >= 4) {
-
+			val = le32_to_cpu(val);
 			memcpy(a3700_spi->rx_buf, &val, 4);
 
 			a3700_spi->buf_len -= 4;