[hermon] Throttle debug output when sensing port type

When auto-detecting the initial port type, the Hermon driver will spam
the debug output without hesitation.  Add a short delay in each
iteration to fix this.

Signed-off-by: Christian Iversen <ci@iversenit.dk>

src/drivers/infiniband/hermon.c

diff --git a/src/drivers/infiniband/hermon.c b/src/drivers/infiniband/hermon.c
index e3b692d..35326ac 100644
--- a/src/drivers/infiniband/hermon.c
+++ b/src/drivers/infiniband/hermon.c
@@ -3743,6 +3743,9 @@
 				rc = port_type;
 				return rc;
 			}
+
+			/* Avoid spamming debug output */
+			mdelay ( 50 );
 		} while ( ( port_type == HERMON_PORT_TYPE_UNKNOWN ) &&
 			  ( ( elapsed = ( currticks() - start ) ) <
 			    HERMON_SENSE_PORT_TIMEOUT ) );