spi: axiado: replace usleep_range() with udelay() in IRQ path

ax_spi_fill_tx_fifo() can be called from ax_spi_irq() which is a hard
irq handler. Replace usleep_range(10, 10) with udelay(10) in atomic
context.

Fixes: e75a6b0 ("spi: axiado: Add driver for Axiado SPI DB controller")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Link: https://patch.msgid.link/20260428-axiado-v1-1-cd767500af72@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: outman119

drivers/spi/spi-axiado.c

@@ -201,7 +201,7 @@ static void ax_spi_fill_tx_fifo(struct ax_spi *xspi)
 		 * then spi control did't work thoroughly, add one byte delay
 		 */
 		if (ax_spi_read(xspi, AX_SPI_IVR) & AX_SPI_IVR_TFOV)
-			usleep_range(10, 10);
+			udelay(10);
 		if (xspi->tx_buf)
 			ax_spi_write_b(xspi, AX_SPI_TXFIFO, *xspi->tx_buf++);
 		else