Fix to properly shadow the DEV bit in the Drive/Head register so other

disks are properly detected and handled

--HG--
extra : convert_revision : ffc3046deb68458ee2ef6fa5263dc471488abc45

dev/ide_ctrl.hh

@@ -144,6 +144,10 @@ class IdeController : public PciDev
     /** Select the disk based on a pointer */
     int getDisk(IdeDisk *diskPtr);
 
+  public:
+    /** See if a disk is selected based on its pointer */
+    bool isDiskSelected(IdeDisk *diskPtr);
+
   public:
     /**
      * Constructs and initializes this controller.