When non-encrypted buffers are sent to OEMCrypto_DecryptCTR,
the cdm is overriding the buffer type to be non-secure. This
is incorrect, the encrypted state is not the same as the buffer
protection level.
This change removes the special case override that should not
be there.
bug: 8621521
Change-Id: I705b1dc82b393305b9e6bdcb524d6b8126f58d3d