tools: kwbimage: Fix validation of kwbimage v0

kwbimage v0 sldo has 32-bit data checksum at the end like kwbimage v1.

Use same data checksum validation for both v0 and v1 image types.

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
1 file changed