platform/mulle/tools: rename scan_fdti -> scan_ftdi

Fixed typo in directory name.

Signed-off-by: Joakim Gebart <joakim.gebart@eistec.se>
Merge pull request #1 from gebart/scan-ftdi-typo

platform/mulle/tools: rename scan_fdti -> scan_ftdi
Merge remote-tracking branch 'eistec/mulle-2-7' into mulle-2-7
platform/mulle: scan_ftdi build fix.

Added missing #include <stdlib.h> for EXIT_SUCCESS and EXIT_FAILURE.

Signed-off-by: Joakim Gebart <joakim.gebart@eistec.se>