samples: seccomp: add .gitignore for untracked executables
samples: seccomp: add .gitignore for untracked executables

git status should be clean following make allmodconfig && make. Add
a .gitignore file to the samples/seccomp directory to ignore binaries
produced there.

Signed-off-by: Chad Williamson <c34c009102e60d77975598e1f414f8a701c22d0b@dahc.us>
Reviewed-By: Will Drewry <72416dde44ea762d19e3a7a555e3b59ce98f8eea@chromium.org>
Acked-by: Kees Cook <50cb10d2be062154b17ab4d66a4eab34f1cf1c84@chromium.org>
Signed-off-by: James Morris <bb9ce606a3116cc7a99739bd8e2dd57a2d5b69c1@oracle.com>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs