V4L/DVB (7080): zr364xx: add support for Pentax Optio 50

Signed-off-by: Antoine Jacquet <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

Documentation/video4linux/zr364xx.txt

···
 0x06d6  0x0034   Trust           Powerc@m 750
 0x0a17  0x0062   Pentax          Optio 50L
 0x06d6  0x003b   Trust           Powerc@m 970Z
+0x0a17  0x004e   Pentax          Optio 50

drivers/media/video/zr364xx.c

···
 	{USB_DEVICE(0x06d6, 0x0034), .driver_info = METHOD0 },
 	{USB_DEVICE(0x0a17, 0x0062), .driver_info = METHOD2 },
 	{USB_DEVICE(0x06d6, 0x003b), .driver_info = METHOD0 },
+	{USB_DEVICE(0x0a17, 0x004e), .driver_info = METHOD2 },
 	{}			/* Terminating entry */
 };