Update for v5.4 kernel headers.

The new headers are coming from the android kernel, so the binder
header file contains everything necessary now.

The only reason to leave the binder_kernel.h file is because one
of the compilers doesn't understandt __packed.

Test: Builds.
Change-Id: I73ae18d77c574a1077ca38bb87a90f455f4d54bf
2 files changed