selftest: arm64: missing install files

[Naresh Kamboju]

While running kselftest arm64 tests the following list of tests
were missing which means those test binaries not installed on to the rootfs.
Not a part of "make install" do we need to fix Makefiles ?
or am I missing something on the build machine ?

We are building on the one machine and testing on multiple arm64 target
devices. Please refer to build log [1] and test log [2].

# selftests: arm64: fp-stress
# Warning: file fp-stress is missing!

# selftests: arm64: sve-ptrace
# Warning: file sve-ptrace is missing!

# selftests: arm64: vec-syscfg
# Warning: file vec-syscfg is missing!

# selftests: arm64: za-ptrace
# Warning: file za-ptrace is missing!

# selftests: arm64: hwcap
# Warning: file hwcap is missing!

# selftests: arm64: ptrace
# Warning: file ptrace is missing!

# selftests: arm64: syscall-abi
# Warning: file syscall-abi is missing!

Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>


[1] Build log: click on log.do_compile file link
https://storage.lkft.org/rootfs-kselftest/oe-kirkstone/20220927-202538/juno/

[2] Test log: click on full log file link
https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20220923/testrun/12052498/suite/kselftest-arm64/tests/

- Naresh