kallsyms/printk: enable symbol printing support (%pS) ...

With this kallsyms finally start working at least on ARM. This
enables us resolving addresses into symbols which is particularly
useful in combination with stack unwinding support. As kallsyms
now compile and work we can remove the depends on BROKEN.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

add kallsyms from linux kernel