Convert ALOGV to ALOGD in various libgui_test cases

ALOGV was not appearing in the logs collected by TradeFed/atest/friends.
I don't want to investigate too deeply right now, since ALOGD works fine.

Bug: 257123981
Bug: 277347398
Change-Id: If3811e5e553ecf97c35967128f3d59b0079d9f3a
Test: N/A (manually compared logs collected after running atest)
diff --git a/libs/gui/tests/BufferQueue_test.cpp b/libs/gui/tests/BufferQueue_test.cpp
index d1208ee..2f1fd3e 100644
--- a/libs/gui/tests/BufferQueue_test.cpp
+++ b/libs/gui/tests/BufferQueue_test.cpp
@@ -49,14 +49,14 @@
     BufferQueueTest() {
         const ::testing::TestInfo* const testInfo =
             ::testing::UnitTest::GetInstance()->current_test_info();
-        ALOGV("Begin test: %s.%s", testInfo->test_case_name(),
+        ALOGD("Begin test: %s.%s", testInfo->test_case_name(),
                 testInfo->name());
     }
 
     ~BufferQueueTest() {
         const ::testing::TestInfo* const testInfo =
             ::testing::UnitTest::GetInstance()->current_test_info();
-        ALOGV("End test:   %s.%s", testInfo->test_case_name(),
+        ALOGD("End test:   %s.%s", testInfo->test_case_name(),
                 testInfo->name());
     }