Kernel: Fix most of mutex + block race conditions

All block functions now take an optional mutex parameter that is
atomically unlocked instead of having the user unlock it before hand.
This prevents a ton of race conditions everywhere in the code!

kernel/kernel/USB/Hub/HubDriver.cpp

@@ -269,7 +269,8 @@ namespace Kernel
 						m_is_init_done = true;
 					}
 
-					m_changed_port_blocker.block_with_timeout_ms(100);
+					// FIXME: race condition
+					m_changed_port_blocker.block_with_timeout_ms(100, nullptr);
 					continue;
 				}
 

kernel/kernel/USB/XHCI/Controller.cpp

@@ -322,7 +322,8 @@ namespace Kernel
 						m_ports_initialized = true;
 					}
 
-					m_port_thread_blocker.block_with_timeout_ms(100);
+					// FIXME: prevent race condition
+					m_port_thread_blocker.block_with_timeout_ms(100, nullptr);
 					expected = true;
 				}
 			}