USB: add usb-serial spcp8x5 driver

Original version of the driver done by Linxb, changes by Harald, and
lots of cleanups by me in order to get it into a mergable state.

Cc: Linxb <xubin.lin@worldplus.com.cn>
Cc: Harald Klein <hari@vt100.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/serial/Kconfig

@@ -503,6 +503,16 @@ config USB_SERIAL_OTI6858
 	  To compile this driver as a module, choose M here: the
 	  module will be called oti6858.
 
+config USB_SERIAL_SPCP8X5
+	tristate "USB SPCP8x5 USB To Serial Driver"
+	depends on USB_SERIAL
+	help
+	  Say Y here if you want to use the spcp8x5 converter chip.  This is
+	  commonly found in some Z-Wave USB devices.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called spcp8x5.
+
 config USB_SERIAL_HP4X
         tristate "USB HP4x Calculators support"
         depends on USB_SERIAL

drivers/usb/serial/Makefile

@@ -30,8 +30,8 @@ obj-$(CONFIG_USB_SERIAL_GARMIN)			+= garmin_gps.o
 obj-$(CONFIG_USB_SERIAL_HP4X)			+= hp4x.o
 obj-$(CONFIG_USB_SERIAL_IPAQ)			+= ipaq.o
 obj-$(CONFIG_USB_SERIAL_IPW)			+= ipw.o
-obj-$(CONFIG_USB_SERIAL_IUU)			+= iuu_phoenix.o
 obj-$(CONFIG_USB_SERIAL_IR)			+= ir-usb.o
+obj-$(CONFIG_USB_SERIAL_IUU)			+= iuu_phoenix.o
 obj-$(CONFIG_USB_SERIAL_KEYSPAN)		+= keyspan.o
 obj-$(CONFIG_USB_SERIAL_KEYSPAN_PDA)		+= keyspan_pda.o
 obj-$(CONFIG_USB_SERIAL_KLSI)			+= kl5kusb105.o
@@ -46,6 +46,7 @@ obj-$(CONFIG_USB_SERIAL_OTI6858)		+= oti6858.o
 obj-$(CONFIG_USB_SERIAL_PL2303)			+= pl2303.o
 obj-$(CONFIG_USB_SERIAL_SAFE)			+= safe_serial.o
 obj-$(CONFIG_USB_SERIAL_SIERRAWIRELESS)		+= sierra.o
+obj-$(CONFIG_USB_SERIAL_SPCP8X5)		+= spcp8x5.o
 obj-$(CONFIG_USB_SERIAL_TI)			+= ti_usb_3410_5052.o
 obj-$(CONFIG_USB_SERIAL_VISOR)			+= visor.o
 obj-$(CONFIG_USB_SERIAL_WHITEHEAT)		+= whiteheat.o