mm: Kconfig: Add DEBUG_SLUB_PANIC_ON option

Add the DEBUG_SLUB_PANIC_ON option to KCONFIG preventing
the existing defconfig option from being overwritten
by make config.

This will induce a panic if slab debug catches corruptions
within the padding of a given object.

The intention here is to induce collection of data
immediately after the corruption is detected with
the goal to catch the possible source of the corruption.

Change-Id: Idffa42de790b9e096e28f7e1f484d86c013d7d83
Signed-off-by: Channagoud Kadabi <ckadabi@codeaurora.org>