USB: Product ID for FT232RL in ftdi_sio

Here is a patch adding the PID for the FT232RL to ftdi_sio. The patch
generates a warning during compilation because get_ftdi_divisor doesn't
explicitly handle the FT232RL with this patch, so I guess you don't want
to use it in its current state. It is all I could come up with with the
knowledge I have of the drivers at the moment, though, and I hope you
can have some use for it at least. It works fine with my DLP-TILT with
an FT232RL.

From: Gard Spreemann <spreeman@stud.ntnu.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h
index cf9a01a..513cfe1 100644
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -27,6 +27,7 @@
 #define FTDI_8U232AM_PID 0x6001 /* Similar device to SIO above */
 #define FTDI_8U232AM_ALT_PID 0x6006 /* FTDI's alternate PID for above */
 #define FTDI_8U2232C_PID 0x6010 /* Dual channel device */
+#define FTDI_232RL_PID  0xFBFA  /* Product ID for FT232RL */
 #define FTDI_RELAIS_PID	0xFA10  /* Relais device from Rudolf Gugler */
 #define FTDI_NF_RIC_VID	0x0DCD	/* Vendor Id */
 #define FTDI_NF_RIC_PID	0x0001	/* Product Id */
@@ -639,6 +640,7 @@
 	FT8U232AM = 2,
 	FT232BM = 3,
 	FT2232C = 4,
+	FT232RL = 5,
 } ftdi_chip_type_t;
 
 typedef enum {