qemu-log.c: upstream integration.

Change-Id: I3d999f5ec0ed9cef6c88ce8a21246974251cea09
diff --git a/Makefile.common b/Makefile.common
index d85dbb6..36cd710 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -426,6 +426,7 @@
     iohandler.c \
     ioport.c \
     qemu-char.c \
+    qemu-log.c \
     readline.c \
     savevm.c \
     android/boot-properties.c \