Actually turn on the improved sysinfo decoding for Android.

Change-Id: I3580b0759d52d03c23daf14bf392fda4af137d3e
diff --git a/Android.mk b/Android.mk
index 3e5af80..e3900e1 100644
--- a/Android.mk
+++ b/Android.mk
@@ -136,6 +136,9 @@
     -DHAVE_STRUCT_STAT_ST_BLKSIZE=1 \
     -DHAVE_STRUCT_STAT_ST_BLOCKS=1 \
     -DHAVE_STRUCT_STAT_ST_RDEV=1 \
+    -DHAVE_STRUCT_SYSINFO_FREEHIGH=1 \
+    -DHAVE_STRUCT_SYSINFO_MEM_UNIT=1 \
+    -DHAVE_STRUCT_SYSINFO_TOTALHIGH=1 \
     -DHAVE_STRUCT_USER_DESC=1 \
     -DHAVE_SYS_EPOLL_H=1 \
     -DHAVE_SYS_IOCTL_H=1 \