[PATCH] USB: add HP49G+ Calculator USB Serial support

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile
index 351b818..b0aac47 100644
--- a/drivers/usb/serial/Makefile
+++ b/drivers/usb/serial/Makefile
@@ -21,6 +21,7 @@
 obj-$(CONFIG_USB_SERIAL_EMPEG)			+= empeg.o
 obj-$(CONFIG_USB_SERIAL_FTDI_SIO)		+= ftdi_sio.o
 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_IR)			+= ir-usb.o