RDMA/qib: rename copy_io to qib_copy_io

Add the proper module prefix to avoid conflicts with a function
in the scheduler.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20211126115817.2087431-2-hch@lst.deSigned-off-by: Jens Axboe <axboe@kernel.dk>

drivers/infiniband/hw/qib/qib_verbs.c

@@ -425,7 +425,7 @@ static inline u32 clear_upper_bytes(u32 data, u32 n, u32 off)
 }
 #endif
 
-static void copy_io(u32 __iomem *piobuf, struct rvt_sge_state *ss,
+static void qib_copy_io(u32 __iomem *piobuf, struct rvt_sge_state *ss,
 		    u32 length, unsigned flush_wc)
 {
 	u32 extra = 0;
@@ -975,7 +975,7 @@ static int qib_verbs_send_pio(struct rvt_qp *qp, struct ib_header *ibhdr,
 			qib_pio_copy(piobuf, addr, dwords);
 		goto done;
 	}
-	copy_io(piobuf, ss, len, flush_wc);
+	qib_copy_io(piobuf, ss, len, flush_wc);
 done:
 	if (dd->flags & QIB_USE_SPCL_TRIG) {
 		u32 spcl_off = (pbufn >= dd->piobcnt2k) ? 2047 : 1023;