gazell: Add user gzp config file

Add capability to override gzp_config.h.

Signed-off-by: Pirun Lee <pirun.lee@nordicsemi.no>

Author: pirun

doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst

@@ -171,6 +171,14 @@ Zigbee
 
 |no_changes_yet_note|
 
+Gazell
+------
+
+* Added:
+
+  * :kconfig:option:`CONFIG_GAZELL_PAIRING_USER_CONFIG_ENABLE` and :kconfig:option:`CONFIG_GAZELL_PAIRING_USER_CONFIG_FILE`.
+    The options allow to use user-specific file as Gazell pairing configuration header to override the pairing configuration.
+
 Enhanced ShockBurst (ESB)
 -------------------------
 

include/gzp.h

@@ -15,7 +15,11 @@
 #include <stdint.h>
 #include <stdbool.h>
 #include <nrf_gzll.h>
+#if defined(CONFIG_GAZELL_PAIRING_USER_CONFIG_ENABLE)
+#include CONFIG_GAZELL_PAIRING_USER_CONFIG_FILE
+#else
 #include "gzp_config.h"
+#endif /* CONFIG_GAZELL_PAIRING_USER_CONFIG_ENABLE */
 
 #ifdef __cplusplus
 extern "C" {

subsys/gazell/Kconfig

@@ -34,7 +34,19 @@ config GAZELL_PAIRING_HOST
 	bool "Host"
 	depends on ENTROPY_GENERATOR
 
-endchoice
+endchoice # GAZELL_PAIRING_ROLE
+
+config GAZELL_PAIRING_USER_CONFIG_ENABLE
+	bool "Use application-specific Gazell Pairing configuration file"
+
+if GAZELL_PAIRING_USER_CONFIG_ENABLE
+config GAZELL_PAIRING_USER_CONFIG_FILE
+	string "Gazell Pairing configuration file name"
+	default "gzp_user_config.h"
+	help
+	  Modify the file name to use an application-specific Gazell Pairing configuration file.
+
+endif # GAZELL_PAIRING_USER_CONFIG_ENABLE
 
 if GAZELL_PAIRING_DEVICE