spi_nxp_lpspi: Add version ID to data struct

Since I expect that the drivers will need to read this version ID maybe
multiple times, instead of repeatedly doing so over the peripheral bus,
it is probably worth it to store a byte in RAM representing this
version. The behavior of the LPSPI is fairly significantly different
between versions. Not enough to warrant separate drivers but enough to
need a few workarounds or different code branches depending on this.

Also, the interrupt based driver is currently using a wrong macro to
read this, and that is a bug.

Signed-off-by: Declan Snyder <declan.snyder@nxp.com>

Author: decsny

drivers/spi/spi_nxp_lpspi/spi_nxp_lpspi.c

@@ -276,7 +276,7 @@ static void lpspi_isr(const struct device *dev)
 	}
 
 	if ((DIV_ROUND_UP(spi_context_rx_len_left(ctx, word_size_bytes), word_size_bytes) == 1) &&
-	    (LPSPI_VERID_MAJOR(base->VERID) < 2)) {
+	    (data->major_version < 2)) {
 		/* Due to stalling behavior on older LPSPI,
 		 * need to end xfer in order to get last bit clocked out on bus.
 		 */

drivers/spi/spi_nxp_lpspi/spi_nxp_lpspi_common.c

@@ -215,6 +215,8 @@ int spi_nxp_init_common(const struct device *dev)
 
 	lpspi_module_system_init(base);
 
+	data->major_version = (base->VERID & LPSPI_VERID_MAJOR_MASK) >> LPSPI_VERID_MAJOR_SHIFT;
+
 	err = spi_context_cs_configure_all(&data->ctx);
 	if (err < 0) {
 		return err;

drivers/spi/spi_nxp_lpspi/spi_nxp_lpspi_priv.h

@@ -50,6 +50,7 @@ struct lpspi_data {
 	struct spi_context ctx;
 	void *driver_data;
 	size_t transfer_len;
+	uint8_t major_version;
 };
 
 /* verifies spi_cfg validity and set up configuration of hardware for xfer */