Adding more options for end characters of possible uboot prompts
The uboot-load-addr argument is not necessary for dm816x
No need to specifgy uboot_boot_args in dm816x
Incrementing the timeout taken to reach the host from uboot through ping, it's
slower on some platforms/networks
Let mkfs.vfat decide whatever fits better for the file system size
Defining the FAT32 type corresponding to 0xc as the more accurate FAT32 (LBA).

For types see: sfdisk --list-types