devicetree: fix DT_SPI_DEV_HAS_CS_GPIOS macro

This fix ensures that the implementation matches the documented
behavior, where the macro return 1 when the cs-gpios property has
an entry matching the reg address of the child device.

This restores the behavior of the devicetree init API prior to
<a60f93d742a48660882af5785fb4352f414ecd11>, which accidentally
introduced this issue by relying on the `DT_SPI_DEV_HAS_CS_GPIOS`
macro, which has deviated from its documented behavior ever since
it was originally introduced 6 years ago.

Signed-off-by: Martin Hoff <martin.hoff@silabs.com>
Co-authored-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>

Author: 2 people

include/zephyr/devicetree/spi.h

@@ -115,7 +115,8 @@ extern "C" {
  * @return 1 if spi_dev's bus node DT_BUS(spi_dev) has a chip select
  *         pin at index DT_REG_ADDR(spi_dev), 0 otherwise
  */
-#define DT_SPI_DEV_HAS_CS_GPIOS(spi_dev) DT_SPI_HAS_CS_GPIOS(DT_BUS(spi_dev))
+#define DT_SPI_DEV_HAS_CS_GPIOS(spi_dev)                                                           \
+	DT_PROP_HAS_IDX(DT_BUS(spi_dev), cs_gpios, DT_REG_ADDR_RAW(spi_dev))
 
 /**
  * @brief Get a SPI device's chip select GPIO controller's node identifier