IB/hfi1: Reduce oversized fields in struct hfi1_packet

Some fields in struct hfi1_packet are oversized.
Reduce them.
Reviewed-by: NMike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: NSebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

drivers/infiniband/hw/hfi1/hfi.h

@@ -356,12 +356,11 @@ struct hfi1_packet {
 	u64 rhf;
 	u32 maxcnt;
 	u32 rhqoff;
-	u32 hdrqtail;
-	int numpkt;
 	u16 tlen;
-	u16 hlen;
 	s16 etail;
-	u16 rsize;
+	u8 hlen;
+	u8 numpkt;
+	u8 rsize;
 	u8 updegr;
 	u8 rcv_flags;
 	u8 etype;