Replace STRINGIFY with STR

Replace usage of zephyr specific STRINGIFY with OS agnostic STR.

Signed-off-by: Sachin D Kulkarni <Sachin.Kulkarni@nordicsemi.no>

Author: sachinthegreen

nrf70_bm_lib/source/radio_test/nrf70_bm_core.c

@@ -89,7 +89,7 @@ int nrf70_bm_rt_fmac_init(void)
 					   &tx_pwr_ctrl_params,
 					   &tx_pwr_ceil_params,
 					   &board_params,
-					   STRINGIFY(CONFIG_NRF70_REG_DOMAIN));
+					   STR(CONFIG_NRF70_REG_DOMAIN));
 	if (status != NRF_WIFI_STATUS_SUCCESS) {
 		NRF70_LOG_ERR("Failed to initialize device\n");
 		goto deinit;

nrf70_bm_lib/source/system/nrf70_bm_core.c

@@ -390,7 +390,7 @@ int nrf70_bm_sys_fmac_init(void)
 					    &tx_pwr_ctrl_params,
 					    &tx_pwr_ceil_params,
 					    &board_params,
-					    STRINGIFY(CONFIG_NRF70_REG_DOMAIN));
+					    STR(CONFIG_NRF70_REG_DOMAIN));
 	if (status != NRF_WIFI_STATUS_SUCCESS) {
 		NRF70_LOG_ERR("Failed to initialize device\n");
 		goto deinit;