mm/kmemleak: use %pK to display kernel pointers in backtrace

mm/kmemleak: use %pK to display kernel pointers in backtrace

Currently, %p is used to display kernel pointers in backtrace which result
in a hashed value that is not usable to correlate the address for debug.
Use %pK which will respect the kptr_restrict configuration value and thus
allow to extract meaningful information from the backtrace.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Clément Léger <[email protected]>
Cc: Alexandre Belloni <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Thomas Petazzoni <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>