libandroidfw: move ConfigDescription from aapt2 to libandroidfw

This is to allow idmap2 to access ConfigDescription.

Test: libandroidfw_tests
Test: aapt2_tests
Change-Id: I54210bbbd8dad5903cb7100807df977efa394ad5
diff --git a/tools/aapt2/split/TableSplitter_test.cpp b/tools/aapt2/split/TableSplitter_test.cpp
index d52f4b44..cdf0738 100644
--- a/tools/aapt2/split/TableSplitter_test.cpp
+++ b/tools/aapt2/split/TableSplitter_test.cpp
@@ -18,6 +18,8 @@
 
 #include "test/Test.h"
 
+using ::android::ConfigDescription;
+
 namespace aapt {
 
 TEST(TableSplitterTest, NoSplitPreferredDensity) {