optical /proc/ide/*/media

Sergey Vlasov reported that his "FUJITSU MCC3064AP, ATAPI OPTICAL drive"
pops up as UNKNOWN in /proc/ide/*/media .

Closes kernel Bugzilla #4145.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>

drivers/ide/ide-proc.c

@@ -377,6 +377,8 @@ static int proc_ide_read_media
 				break;
 		case ide_floppy:media = "floppy\n";
 				break;
+		case ide_optical:media = "optical\n";
+				break;
 		default:	media = "UNKNOWN\n";
 				break;
 	}