stop warning messages in devtojuke with marvell sata devices.

Reference: /n/sources/patch/applied/fs-statw-mvsata
Date: Thu Mar  8 15:22:08 CET 2007
Signed-off-by: quanstro@quanstro.net

--- /sys/src/fs/dev/juke.c	Thu Mar  8 15:21:58 2007
+++ /sys/src/fs/dev/juke.c	Thu Mar  8 15:21:47 2007
@@ -326,6 +326,7 @@
 			/* FALL THROUGH */
 		case Devwren:
 		case Devide:
+		case Devmarvsata:
 			return nil;
 
 		case Devcw: