arm64: smp: Fix EDAC DBE panic_smp_self_stop() conflict

commit  cb8fe7dd877ec660143be79e325ededa924f990b from
https://github.com/altera-opensource/linux-socfpga.git



The EDAC Warm Reset on peripheral DBE now has a conflict
with the platform function which was recently added.

Replace the platform function with the EDAC version
when WARM_RESET is configured.

Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Meng Li <Meng.Li@windriver.com>