uwb(hal): Doc update to clarify country code payload of 00
Bug: 243426975
Change-Id: I6ec56c68df5e1049d93c31e498934501f7d75ad1
Test: N/A
diff --git a/uwb/aidl/android/hardware/uwb/fira_android/UwbVendorGidAndroidOids.aidl b/uwb/aidl/android/hardware/uwb/fira_android/UwbVendorGidAndroidOids.aidl
index 42d52f1..4768f55 100644
--- a/uwb/aidl/android/hardware/uwb/fira_android/UwbVendorGidAndroidOids.aidl
+++ b/uwb/aidl/android/hardware/uwb/fira_android/UwbVendorGidAndroidOids.aidl
@@ -30,6 +30,8 @@
ANDROID_GET_POWER_STATS = 0x0,
// Used to set the current regulatory country code (determined usinag
// SIM or hardcoded by OEM).
+ // Country code is sent as a 2 byte value corresponding to ISO-3166 country code.
+ // Note: "00" is used to indicate that the country code is unknown.
ANDROID_SET_COUNTRY_CODE = 0x1,
// Used by the notification to get UWB ranging diagnostics stats.
// Supported only if the UwbVendorCapabilityTlvTypes.SUPPORTED_DIAGNOSTICS set