mfd: rave-sp: Fix incorrectly specified checksum type

RAVE SP firmware covered by "legacy" variant uses 16-bit CCITT
checksum algorithm. Change the code to correctly reflect that.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
1 file changed