arch/tile: revert comment for atomic64_add_unless().
arch/tile: revert comment for atomic64_add_unless().

It still returns whether @v was not @u, not the old value,
unlike __atomic_add_unless().

Signed-off-by: Chris Metcalf <074881f6f5da4d3b5278870ff234d1077ee622c0@tilera.com>
Acked-by: Arun Sharma <c2cb8b536bb785a11a9303a3d5590407e9ac6d77@fb.com>

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