qmod: Use different Interface Strings for Modem1+2 / Modem 3+4
This makes it obvious in 'lsusb' and to other software on the USB host
which interface is for which of the modems.
diff --git a/firmware/Makefile b/firmware/Makefile
index b9f267b..e3bb418 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -95,7 +95,7 @@
C_LIBCHIP = $(notdir $(wildcard $(AT91LIB)/libchip_sam3s/source/*.c) $(wildcard $(AT91LIB)/libchip_sam3s/cmsis/*.c))
C_LIBUSB = USBDescriptors.c USBRequests.c USBD.c USBDCallbacks.c USBDDriver.c USBDDriverCallbacks.c
-C_LIBUSB_RT = dfu.c dfu_desc.c dfu_runtime.c
+C_LIBUSB_RT = dfu.c dfu_runtime.c
C_LIBUSB_DFU = dfu.c dfu_desc.c dfu_driver.c
C_LIBCOMMON = string.c stdio.c fputs.c req_ctx.c ringbuffer.c