flashbench: fix time_to_ns for 32 bit systems

Incorrect type conversion results in potentially
negative time values.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
1 file changed
tree: eda66b3802bd4c6d0db10b28c30e2861f0f58358
  1. dev.c
  2. dev.h
  3. erase.c
  4. flashbench.c
  5. Makefile
  6. README
  7. vm.c
  8. vm.h