[nrf noup] Added workaround to pass nRF compliance check

Added undefined CHIP_NXP_PLATFORM config to pass compliance check.

Signed-off-by: Kamil Kasperczyk <kamil.kasperczyk@nordicsemi.no>

config/zephyr/Kconfig

@@ -14,6 +14,15 @@
 #   limitations under the License.
 #
 
+# Workaround to pass the nRF compliance check
+config CHIP_NXP_PLATFORM
+	bool
+	default n
+	help
+	  States that the configuration uses Matter NXP platform,
+	  what can be used to conditionally deviate from Zephyr generic configuration
+	  for NXP platform related purposes.
+
 menuconfig CHIP
 	bool "Matter protocol stack"
 	default n