oeqa/utils/commands.py: allow use of binaries from native sysroot
Tests may need to run a native tool that is not available on the host
filesystem, but can be built using one of the *-native recipes. In such case,
the tool will be available in native sysroot, and running in from that location
will require adjustments to PATH.
runCmd() can now take a path to native sysroot as one of its arguments and
setup PATH accordingly.
Signed-off-by: Maciej Borzecki <maciej.borzecki@rndity.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
