jlink_spi.c: Correct some log messages

Fix a few typos and a copy-paste error in log messages.

Change-Id: Ic69503f60a59aa0f4b991eaa2a7be40a7d9c1301
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/52412
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Miklós Márton <martonmiklosqdev@gmail.com>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
1 file changed