Hide GPL headers, add license_text, rest is Apache am: d1d7e669a6 am: 1c515944de

Original change: https://android-review.googlesource.com/c/platform/system/memory/libion/+/1743733

Change-Id: I5d1a4171bf25bd435375db786fed099878d26448
tree: e979183619775e9f4d07a15139b816b93dde330a
  1. include/
  2. kernel-headers/
  3. original-kernel-headers/
  4. tests/
  5. Android.bp
  6. ion.c
  7. ion_test.c
  8. METADATA
  9. OWNERS