spi: spi-gpio: fix bug introduced by 6.6 merge

Fix the host->mode_bits mask. Missed to OR SPI_LSB_FIRST with
SPI_MOSI_IDLE_LOW .

Fixes: d31fa31 ("Merge tag 'xilinx-v2024.1' of https://github.com/Xilinx/linux-xlnx.git")
Signed-off-by: Nuno Sa <nuno.sa@analog.com>

Author: nunojsa

drivers/spi/spi-gpio.c

@@ -419,7 +419,7 @@ static int spi_gpio_probe(struct platform_device *pdev)
 
 	host->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32);
 	host->mode_bits = SPI_3WIRE | SPI_3WIRE_HIZ | SPI_CPHA | SPI_CPOL |
-			  SPI_CS_HIGH | SPI_LSB_FIRST SPI_MOSI_IDLE_LOW |
+			  SPI_CS_HIGH | SPI_LSB_FIRST | SPI_MOSI_IDLE_LOW |
 			  SPI_MOSI_IDLE_HIGH;
 	if (!spi_gpio->mosi) {
 		/* HW configuration without MOSI pin