scsi: MAINTAINERS: Update cxgb3i and cxgb4i maintainer

Link: https://lore.kernel.org/r/20220612121340.6746-1-varun@chelsio.comSigned-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

MAINTAINERS

@@ -5354,7 +5354,7 @@ W:	http://www.chelsio.com
 F:	drivers/net/ethernet/chelsio/cxgb3/
 
 CXGB3 ISCSI DRIVER (CXGB3I)
-M:	Karen Xie <kxie@chelsio.com>
+M:	Varun Prakash <varun@chelsio.com>
 L:	linux-scsi@vger.kernel.org
 S:	Supported
 W:	http://www.chelsio.com
@@ -5386,7 +5386,7 @@ W:	http://www.chelsio.com
 F:	drivers/net/ethernet/chelsio/cxgb4/
 
 CXGB4 ISCSI DRIVER (CXGB4I)
-M:	Karen Xie <kxie@chelsio.com>
+M:	Varun Prakash <varun@chelsio.com>
 L:	linux-scsi@vger.kernel.org
 S:	Supported
 W:	http://www.chelsio.com