checkpolicy:  Minor fixes for README.android.

Fix a cut-and-paste error from the libsepol README.android
(libsepol -> checkpolicy).
Note the other two files added for Android
(MODULE_LICENSE_GPL and NOTICE).

Change-Id: I39579be3a2f49ab3369078c349817963cad717df
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

README.android

diff --git a/README.android b/README.android
index 7f618cc..668740e 100644
--- a/README.android
+++ b/README.android
@@ -1,9 +1,11 @@
 This directory contains checkpolicy, the SELinux policy compiler.
 Upstream git repository is https://github.com/SELinuxProject/selinux
-(libsepol subdirectory) and official releases are available from
+(checkpolicy subdirectory) and official releases are available from
 https://github.com/SELinuxProject/selinux/wiki/Releases.
 
 Last updated to checkpolicy 2.4.
 
 New files added for Android:
 * checkpolicy/Android.mk (later added upstream)
+* checkpolicy/MODULE_LICENSE_GPL
+* checkpolicy/NOTICE (upstream calls it COPYING)