Add asm/a.out.h to arm64/mips/mips64

The common header include/linux/a.out.h include asm/a.out.h, but
arm64/mips/mips64 don't have it.  Add a placeholder before bionic
has it

Change-Id: I7084e0beabe86fec32987a89e66d6c094f1e8c22
3 files changed