This adds ethernet, TFTP support for PIC32MZ[DA] Starter Kit. Also
custom environment variables/scripts are added to help boot from network.
Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
Enable MMC, SDHCI, FAT_FS support for PIC32MZ[DA] StarterKit.
Also add custom scripts, rules to boot Linux from microSD card.
Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>