wifi: Rename failure_reason_util to wifi_status_util

The HIDL interface now returns a |WifiStatus| instance to indicate the
status of any operation. This is replacing the existing asynchronous
delivery of success or failure (using |FailureReason| instance).

Rename the existing util class to |wifi_status_util| and add a couple of
methods to create a |WifiStatus| instance with empty description.

Bug: 32056230
Test: Compiles
Change-Id: I8488f7cd7d6ad6bd7a0c3c82a7ef83299d877d45
diff --git a/wifi/1.0/default/Android.mk b/wifi/1.0/default/Android.mk
index 3fd5fba..3d8c689 100644
--- a/wifi/1.0/default/Android.mk
+++ b/wifi/1.0/default/Android.mk
@@ -18,7 +18,6 @@
 LOCAL_MODULE_RELATIVE_PATH := hw
 LOCAL_CPPFLAGS := -std=c++11 -Wall -Wno-unused-parameter -Werror -Wextra
 LOCAL_SRC_FILES := \
-    failure_reason_util.cpp \
     wifi.cpp \
     wifi_ap_iface.cpp \
     wifi_chip.cpp \
@@ -26,7 +25,8 @@
     wifi_nan_iface.cpp \
     wifi_p2p_iface.cpp \
     wifi_rtt_controller.cpp \
-    wifi_sta_iface.cpp
+    wifi_sta_iface.cpp \
+    wifi_status_util.cpp
 LOCAL_SHARED_LIBRARIES := \
     android.hardware.wifi@1.0 \
     libbase \