Set sdk_version 28 in aidl_interface

default value of sdk_version in aidl_interface is changed.("28" -> "system_current")
so sdk_version of this module have to be "28" because it is included in framework.jar.

Test: m -j
Bug: 126469673
Change-Id: I7bf7ead3fb0eb92bc7655b5ee81a2c47a074ef40
1 file changed