Preform ALL checks in try_lock.

Forgot to copy paste after fixing issues in lock.

Doesn't seem to be used early enough to matter, but in case it ever
is...

kernel/src/sync/spin_lock.rs

@@ -148,7 +148,10 @@ impl<T: ?Sized> SpinLock<T> {
  /// a guard within Some.
  pub fn try_lock(&self) -> Option<SpinLockGuard<T>> {
  use core::sync::atomic::Ordering;
- if crate::i386::interrupt_service_routines::INSIDE_INTERRUPT_COUNT.load(Ordering::SeqCst) != 0 {
+ use crate::cpu_locals::ARE_CPU_LOCALS_INITIALIZED_YET;
+ use crate::i386::interrupt_service_routines::INSIDE_INTERRUPT_COUNT;
+ use super::INTERRUPT_DISARM;
+ if !INTERRUPT_DISARM.load(Ordering::SeqCst) && ARE_CPU_LOCALS_INITIALIZED_YET.load(Ordering::SeqCst) && INSIDE_INTERRUPT_COUNT.load(Ordering::SeqCst) != 0 {
  panic!("\
  You have attempted to lock a spinlock in interrupt context. \
  This is most likely a design flaw. \