spi: Raise limit on number of chip selects to 24

We have a system which uses 24 SPI chip selects, raise the hard coded
limit accordingly.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://patch.msgid.link/20250629-spi-increase-number-of-cs-v2-1-85a0a09bab32@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: marckleinebudde

include/linux/spi/spi.h

@@ -21,7 +21,7 @@
 #include <uapi/linux/spi/spi.h>
 
 /* Max no. of CS supported per spi device */
-#define SPI_CS_CNT_MAX 16
+#define SPI_CS_CNT_MAX 24
 
 struct dma_chan;
 struct software_node;