treewide: fix signedness mixups in printf format specifiers ...

This most likely doesn't fix any real bugs, but it's the
right thing to do and reduces the noise level with static
checkers.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

scripts: Fix compilation warning. ...

Fix following warning:
scripts/kallsyms.c: In function ‘read_symbol’:
scripts/kallsyms.c:81:9: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result

Solution overtaken from kernel tree.

Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

add kallsyms.c from linux kernel