Increase stack size on all test platforms, not just
qemu_x86.
Stack overflow was seen on HW tests as well, so
it might happen on many platforms.
Signed-off-by: Seppo Takalo <seppo.takalo@nordicsemi.no>
When running on qemu_x86, the test test_socket_state failed on
stack overflow. Setting CONFIG_TEST_EXTRA_STACK_SIZE to 1024
seems to fix the issue. So add a board specific config for
qemu_x86 so this test would pass.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
