Blackfin arch: add CONFIG_APP_STACKS_L1 to enable or disable putting kernel stacks in L1

use CONFIG_APP_STACKS_L1 to enable or disable putting kernel stacks in L1,
default is enabled, SMP kernel need turn it off

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

2 files changed