[Bug translation/80001] diagnostics: untranslateable %s placeholders in omp-offload.c

[roland.illig at gmx dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80001

--- Comment #1 from Roland Illig <roland.illig at gmx dot de> ---
Note that the above is not the only instance. Please check each %s format
specifier in this file for this pattern.

loop->routine ? "routine call" : "loop" (twice)
tiling ? " tile" : ""

While here, please also update the '%s' around line 600 to be %qs.