bitbake-metadata2doc.py: needs module re for is_compatible_machine

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
bitbake-metadata2doc.sh: add recipes for the MX5 section

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
bitbake-metadata2doc.sh: split xserver-xorg and udev into two lines

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
extract-bitbake-metadata.py: fully expand COMPATIBLE_MACHINE

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>
bitbake-metadata2doc.py: explicit pass out_dir along to write_inc_file

So that write_inc_file doesn't get out_dir from the global env.

Signed-off-by: Mario Domenech Goulart <mario@ossystems.com.br>