Use nanosleep() instead of usleep() where available

Usleep() has been obsolete for quite a while.
The only target that uses it without alternative is DOS.

Corresponding to flashrom svn r1899.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
1 file changed