cros-build/firmware/coral.bin: Support for large payloads
This replaces the coral FW image with one that adds a commit by Julius Werner (45f2be285df6c78b657304198d736e33a9992cc2) to increase the allowed payload size of Depthcharge. This change was already present in the firmwares of grunt, rammus and octopus, but missing in coral. Depthcharge can now download up to 512MB of kernel + ramdisk data.
Signed-off-by: Ricardo Cañuelo email@example.com