Staging: hv: Remove typedef DRIVER_OBJECT and PDRIVER_OBJECT

typedef DRIVER_OBJECT and PDRIVER_OBJECT are removed and their usages
are replace by the use of struct hv_driver and struct hv_driver *
respectively.

Here is the semantic patch generated to perform this transformation:
(http://coccinelle.lip6.fr/)

//<smpl>
@rm_DRIVER_OBJECT@
@@
-typedef struct _DRIVER_OBJECT
+struct hv_driver
{...}
-DRIVER_OBJECT
;

@rm_PDRIVER_OBJECT@
@@
-typedef struct _DRIVER_OBJECT *PDRIVER_OBJECT;
+struct hv_driver;

@fixtypedef_DRIVER_OBJECT@
typedef DRIVER_OBJECT;
@@
-DRIVER_OBJECT
+struct hv_driver

@fixstruct__DRIVER_OBJECT@
@@
struct
-_DRIVER_OBJECT
+hv_driver

@fixtypedef_PDRIVER_OBJECT@
typedef PDRIVER_OBJECT;
@@
-PDRIVER_OBJECT
+struct hv_driver*
//</smpl>

Signed-off-by: Nicolas Palix <npalix@diku.dk>
Cc: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>