testlibraw: build the CLOCK_MONOTONIC_RAW test conditionally

CLOCK_MONOTONIC_RAW is a somewhat recent addition, and some older
toolchains/kernels may not have the support for it. Therefore, we
build the part of the test that uses CLOCK_MONOTONIC_RAW only when
this definition is available.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
1 file changed