m68k: fix broken buildman m68k

fix 19/48 broken board compilations, due to a now too smal 16-bit
relative jump

Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
4 files changed