fix(llcc68): move SPI CS delay to devicetree

Zephyr deprecates passing the chip-select delay as the variadic delay argument to SPI_DT_SPEC_INST_GET. Remove that deprecated macro argument from the raw LLCC68 device initializer.

Add spi-cs-setup-delay-ns and spi-cs-hold-delay-ns defaults to the custom LLCC68 devicetree binding. Both defaults are 100000 ns, preserving the previous 100 us delay behavior while using the current Zephyr SPI devicetree properties.

Verified with cmake -S . -B build and cmake --build build from the parent application.

drivers/llcc68/llcc68_raw.c

@@ -46,7 +46,7 @@ int llcc68_init(const struct device *dev) {
 	static struct llcc68_data llcc68_data_##inst;                                                  \
 	static const struct llcc68_config llcc68_config_##inst =                                       \
 		{                                                                                          \
-			.spi            = SPI_DT_SPEC_INST_GET(inst, SPI_WORD_SET(8) | SPI_TRANSFER_MSB, 100), \
+			.spi            = SPI_DT_SPEC_INST_GET(inst, SPI_WORD_SET(8) | SPI_TRANSFER_MSB),      \
 			.reset_gpio     = GPIO_DT_SPEC_INST_GET(inst, reset_gpios),                            \
 			.busy_gpio      = GPIO_DT_SPEC_INST_GET(inst, busy_gpios),                             \
 			.dio1_gpio      = GPIO_DT_SPEC_INST_GET(inst, dio1_gpios),                             \

dts/bindings/semtech,llcc68-weihua.yaml

@@ -47,3 +47,9 @@ properties:
     description: |
       Antenna switch RX enable GPIO. If set, the driver tracks the
       state of the radio and controls the RF switch.
+
+  spi-cs-setup-delay-ns:
+    default: 100000
+
+  spi-cs-hold-delay-ns:
+    default: 100000