defconfig: kona: Disable cpu subsystem dumping driver support

Moving all the cpu subsystem dumping support to memory
dump driver to unify the approach followed dump table
entries registration.

Change-Id: Ic4f34ca4c9a01db2119701d4fb909c65a72be13e
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>