Fix compiling treadstone32/rev1 (#11447)

* fix compiling treadstone32/rev1

* move most options back to top level rules.mk

keyboards/treadstone32/rev1/rules.mk

@@ -0,0 +1,9 @@
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
+BOOTLOADER = atmel-dfu

keyboards/treadstone32/rules.mk

@@ -1,16 +1,6 @@
 # MCU name
 MCU = atmega32u4
 
-# Bootloader selection
-#   Teensy       halfkay
-#   Pro Micro    caterina
-#   Atmel DFU    atmel-dfu
-#   LUFA DFU     lufa-dfu
-#   QMK DFU      qmk-dfu
-#   ATmega32A    bootloadHID
-#   ATmega328P   USBasp
-BOOTLOADER = atmel-dfu
-
 # Build Options
 #   change yes to no to disable
 #