spi: spi-fsl-lpspi: fsl_lpspi_can_dma(): directly assign return value to fsl_lpspi...

spi: spi-fsl-lpspi: fsl_lpspi_can_dma(): directly assign return value to fsl_lpspi->usedma

The function fsl_lpspi_can_dma() returns a bool.

Simplify the code, remove the if/else and assign the return value of
fsl_lpspi_can_dma() directly to fsl_lpspi->usedma.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://patch.msgid.link/20260319-spi-fsl-lpspi-cleanups-v2-8-02b56c5d44a8@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>