archimedes: Enable NKRO and update prebuilt firmware files

Author: tmk

converter/archimedes_usb/Makefile

@@ -53,7 +53,7 @@ MOUSEKEY_ENABLE ?= yes	# Mouse keys
 EXTRAKEY_ENABLE ?= yes	# Audio control and System control
 CONSOLE_ENABLE ?= yes	# Console for debug
 COMMAND_ENABLE ?= yes   # Commands for debug and configuration
-#NKRO_ENABLE ?= yes	# USB Nkey Rollover
+NKRO_ENABLE ?= yes	# USB Nkey Rollover
 UNIMAP_ENABLE = yes
 KEYMAP_SECTION_ENABLE = yes