pico-imx6ul: Add function to create gpt partitions

Command run setup_emmc will create gpt partitions for mmc 0 device
based on patitions variable.

Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
2 files changed