introduce support for new ngff_cardem board

This adds support for the new ngff_cardem board, a board that
basically combines a ngff breakout board with a built-in SIMtrace2.

Cardem works, but depending on the modem it might need a adjusted ATR to
ensure a lower baud  rate is used by the modem, high rates might lead
to weird power cycling of the card after a few transfers.

Trace was also tested and appears to work as expected.

Change-Id: Ia96124fbe8a752c98e7fd4096d542a3b2b9bc255

host/contrib/99-simtrace2.rules

@@ -18,6 +18,8 @@ ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="4003", GROUP="plugdev"
 ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="4004", GROUP="plugdev"
 # sysmocom OCTSIMTEST
 ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="616d", GROUP="plugdev"
+# ngff-cardem
+ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="616e", GROUP="plugdev"
 
 # All done
 LABEL="simtrace2_rules_end"

host/lib/usb_util.c

@@ -33,5 +33,6 @@ const struct dev_id osmo_st2_compatible_dev_ids[] = {
 	{ USB_VENDOR_OPENMOKO, USB_PRODUCT_QMOD_SAM3 },
 	{ USB_VENDOR_OPENMOKO, USB_PRODUCT_SIMTRACE2 },
 	{ USB_VENDOR_OPENMOKO, USB_PRODUCT_OCTSIMTEST },
+	{ USB_VENDOR_OPENMOKO, USB_PRODUCT_NGFF_CARDEM },
 	{ 0, 0 }
 };

host/src/simtrace2-sniff.c

@@ -315,6 +315,7 @@ static const struct option opts[] = {
 /* Known USB device with SIMtrace firmware supporting sniffer */
 static const struct dev_id compatible_dev_ids[] = {
 	{ USB_VENDOR_OPENMOKO, USB_PRODUCT_SIMTRACE2 },
+	{ USB_VENDOR_OPENMOKO, USB_PRODUCT_NGFF_CARDEM },
 	{ 0, 0 }
 };