drivers: nrfwifi: Fix random MAC address setting

Random MAC address setting can never be configured as the two defaults
cover all cases. Fix the defaults, now the order is

* Fixed
* OTP (default, in case of no config)
* Random

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>
diff --git a/drivers/wifi/nrfwifi/Kconfig.nrfwifi b/drivers/wifi/nrfwifi/Kconfig.nrfwifi
index 3096dd7..d86049e 100644
--- a/drivers/wifi/nrfwifi/Kconfig.nrfwifi
+++ b/drivers/wifi/nrfwifi/Kconfig.nrfwifi
@@ -496,8 +496,8 @@
 
 choice
 	prompt "Wi-Fi MAC address type"
-	default WIFI_OTP_MAC_ADDRESS if WIFI_FIXED_MAC_ADDRESS = ""
 	default WIFI_FIXED_MAC_ADDRESS_ENABLED if WIFI_FIXED_MAC_ADDRESS != ""
+	default WIFI_OTP_MAC_ADDRESS
 	help
 	  Select the type of MAC address to be used by the Wi-Fi driver