Use TeamWin external_sepolicy repo

Fixes build error in 5.1 minimal tree

default.xml

@@ -255,7 +255,7 @@
   <!--project path="external/robolectric" name="platform/external/robolectric" groups="pdk-cw-fs" /> -->
   <project path="external/safe-iop" name="platform/external/safe-iop" groups="pdk" />
   <!--project path="external/scrypt" name="platform/external/scrypt" groups="pdk" /> -->
-  <project path="external/sepolicy" name="android_external_sepolicy" remote="omnirom" revision="android-5.1" groups="pdk" />
+  <project path="external/sepolicy" name="android_external_sepolicy" remote="TeamWin" revision="android-5.1" groups="pdk" />
   <!--project path="external/sfntly" name="platform/external/sfntly" groups="pdk-cw-fs,qcom_msm8x26" /> -->
   <!--project path="external/skia" name="android_external_skia" remote="omnirom" revision="android-5.1" groups="pdk-cw-fs,qcom_msm8x26" /> -->
   <!--project path="external/smack" name="platform/external/smack" groups="pdk-cw-fs" /> -->