Merge pull request #13 from LedgerHQ/add-have-webusb-flag

Fix freeze on windows for Stax

Makefile

@@ -49,7 +49,7 @@ DEFINES += LEDGER_MAJOR_VERSION=$(APPVERSION_M)
 DEFINES += LEDGER_MINOR_VERSION=$(APPVERSION_N)
 DEFINES += LEDGER_PATCH_VERSION=$(APPVERSION_P)
 DEFINES += OS_IO_SEPROXYHAL
-DEFINES += UNUSED\(x\)=\(void\)x
+DEFINES += HAVE_WEBUSB WEBUSB_URL_SIZE_B=0 WEBUSB_URL=""
 
 DEFINES += BOLOS_APP_ICON_SIZE_B=\(9+32\)
 #DEFINES += HAVE_ELECTRUM