RN: Use single side printing for PDF as default

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
RN: Update to Dizzy

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
RN: improve SoCs blockdiag style

Use the Liberation font and apply anti-aliasing.

Signed-off-by: Lucas Dutra Nunes <ldnunes@ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
RN: add SoCs tree generation via blockdiag extension

This looks better than the currently generated ASCII tree.

Signed-off-by: Lucas Dutra Nunes <ldnunes@ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
RN: add preamble file for configuration of SoCs blockdiag

The allowed configuration options are available here:
http://blockdiag.com/en/blockdiag/attributes/diagram.attributes.html

Signed-off-by: Lucas Dutra Nunes <ldnunes@ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
RN: Improve PDF generation of the SoC families

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>