enic: misc cleanup items:

Clarrify reading PBA has no side-effect (clearing).
Add missing GPL license text.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/enic/vnic_resource.h b/drivers/net/enic/vnic_resource.h
index 144d281..b61c22a 100644
--- a/drivers/net/enic/vnic_resource.h
+++ b/drivers/net/enic/vnic_resource.h
@@ -38,7 +38,7 @@
 	RES_TYPE_INTR_CTRL,		/* Interrupt ctrl table */
 	RES_TYPE_INTR_TABLE,		/* MSI/MSI-X Interrupt table */
 	RES_TYPE_INTR_PBA,		/* MSI/MSI-X PBA table */
-	RES_TYPE_INTR_PBA_LEGACY,	/* Legacy intr status, r2c */
+	RES_TYPE_INTR_PBA_LEGACY,	/* Legacy intr status */
 	RES_TYPE_RSVD6,
 	RES_TYPE_RSVD7,
 	RES_TYPE_DEVCMD,		/* Device command region */