util/bimgtool: Use CRC 16 instead of CRC x25.

Switched to CRC 16 as it's 40% faster than CRC x25.
Both CRC 16 and CRC x25 are supported and either can be selected through
define directives.

TEST=built urara bootblock and verified content of bootblock.bin, observed
     expected content; ran it on Pistachio FPGA and observed that its
     content is read properly by bootrom.

Change-Id: I36dec6ec2d6616343f97cc8b6486c0a3e4ea49ba
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 6d9318097ca9270bc245e7de4aff5f78dfbc1606
Original-Change-Id: If1a78350e0b48d91bfe64ead45f852f44ba3cf9a
Original-Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/226840
Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Commit-Queue: Vadim Bendebury <vbendeb@chromium.org>
Original-Tested-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: http://review.coreboot.org/9415
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
1 file changed