Revert "Revert "adb: move adb_strerror to sysdeps/win32/errno.cpp.""

This reverts commit 43c02b27cd50a75f0fecb44e56a9bf32c6923aef.

Test: mma
Change-Id: I6b22ead8a4b964973ee2fdb8deba42bea74880cf
diff --git a/adb/Android.mk b/adb/Android.mk
index be04cfa..f9998e4 100644
--- a/adb/Android.mk
+++ b/adb/Android.mk
@@ -88,10 +88,12 @@
 
 LIBADB_windows_SRC_FILES := \
     sysdeps_win32.cpp \
+    sysdeps/win32/errno.cpp \
     sysdeps/win32/stat.cpp \
     usb_windows.cpp \
 
 LIBADB_TEST_windows_SRCS := \
+    sysdeps/win32/errno_test.cpp \
     sysdeps_win32_test.cpp \
 
 include $(CLEAR_VARS)