IB/ipath: Change ipath_devdata.ipath_sdma_status to be unsigned long

Andrew Morton <akpm@linux-foundation.org> pointed out that bitops
should take an unsigned long * arg.  However, the ipath driver was
doing bitops on struct ipath_devdata.ipath_sdma_status, which is u64.
Change this member to unsigned long to avoid tons of warnings when x86
fixes the bitops to take unsigned long * instead of void *.

Also, change the IPATH_SDMA_RUNNING and IPATH_SDMA_SHUTDOWN bit
numbers to 30 and 31 (instead of 62 and 63) so that we're not setting
another booby trap for someone who tries to make ipath work on a
32-bit architecture.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/hw/ipath/ipath_driver.c

@@ -1894,7 +1894,7 @@ void ipath_cancel_sends(struct ipath_devdata *dd, int restore_sendctrl)
 	 */
 	if (dd->ipath_flags & IPATH_HAS_SEND_DMA) {
 		int skip_cancel;
-		u64 *statp = &dd->ipath_sdma_status;
+		unsigned long *statp = &dd->ipath_sdma_status;
 
 		spin_lock_irqsave(&dd->ipath_sdma_lock, flags);
 		skip_cancel =