px4io: make "too high rate" warning consistent with real behavor
Merge pull request #442 from PX4/px4io_rate_fix

px4io: make "too high rate" warning consistent with real behavor
Extended file test for alignment
Merge branch 'sdtest' of github.com:PX4/Firmware into hil_usb_only
Slight fix to test, but still fails validating written data after non-aligned writes
Merge branch 'sdtest' into hil_usb_only
added hw test, added better io debugging