ctrl_test.c: fix build with GCC 7.1.1

According to GCC's online docs:

When an inline function is not static, then the compiler must
assume that there may be calls from other source files; since
a global symbol can be defined only once in any program, the
function must not be defined in the other source files, so the
calls therein cannot be integrated. Therefore, a non-static
inline function is always compiled on its own in the usual fashion.

There is no any (performance or size) benefit from 'inline' keyword
in this particular file, so let's replace one by 'static'.

Change-Id: I11e1f1cfea09c6f0cf8225239e782b551d3eb52f

0 files changed, 0 insertions, 0 deletions