Get the full directory name of the cibuild.sh no matter where called from

Or it would fail to set nuttx/apps/tools/prebuilt dirs correctly when cibuild.sh
is not called by 'cd testing; ./cibuild.sh'. For example, it would break jenkins
groovy script which call with ./testing/cibuild.sh.

Change-Id: I8a9d4a6534578a472952668c0172cd6f5bedff8e
Signed-off-by: liuhaitao <liuhaitao@xiaomi.com>
1 file changed
tree: 56533fc19ba88f299dc32affe5ccc2bfb2771fa7
  1. testlist/
  2. cibuild.sh
  3. README.md
README.md

incubator-nuttx-testing