Since commit v3.9.0-rc1~160^2 (VS: Use tool-specific flag table for
COMPILE_FLAGS parsing, 2017-05-03) we now correctly use the `rc` flag
table to process the COMPILE_FLAGS flags of `.rc` source files instead
of incorrectly using the `cl` flag table as before.  However, our `rc`
flag table is not complete.  The `/nologo` flag was working before only
by accident because the `cl` flag table entry for it happened to match.
Add the proper entry to the `rc` flag table.

Fixes: #16991