ANVL: Don't reload kernel and initramfs from NAND before booting

This saves some time booting up the kernel at the cost of
not knowing for sure the NAND write worked until a reboot.
ANVL: update gitignore to ignore tmp files
ANVL: Populate eMMC VFAT partition during install

Also fix the mkfs.vfat -F 32 as u-boot seems to need that
for fatls to work.
ANVL: Stop writing kernel and initramfs to NAND

Let's just keep u-boot there and load the rest from eMMC.
ANVL: Updated binaries to load kernel from eMMC

U-boot: e035a54eeb30808b94dd8e616041e2f2975fc6e2
Kernel: a7ab20d81dd16e7e49e38956ccc7c017deb684bb
Initramfs: de37caaf03adfd6f810b7455b9de63406870363f