sepolicy: updates for cmhw

* add vibe voltage device and context
* add kcal device and context
* add missed amp node

Change-Id: I1855648980e0156fffa646d503fbd44b6f724333
a5: Create a symlink for rild2
* Our rild from Kitkat uses rild1 for the second sim, but Lollipop rild2. So just create a symlink to solve this problem