x86: correct size for stack bound check for privileged stack

Previous commit changed the privileged stack size to be using
kconfig CONFIG_PRIVILEGED_STACK_SIZE instead of simply
CONFIG_MMU_PAGE_SIZE. However, the stack bound check function
was still using the MMU page size, so fix that.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
1 file changed