[Keyboard] Fix bootloader size for v60_type_r (#4873)

keyboards/v60_type_r/rules.mk

@@ -39,13 +39,14 @@ F_USB = $(F_CPU)
 OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
 
 
-# Boot Section Size in *bytes*
+# Bootloader selection
-#   Teensy halfKay   512
+#   Teensy       halfkay
-#   Teensy++ halfKay 1024
+#   Pro Micro    caterina
-#   Atmel DFU loader 4096
+#   Atmel DFU    atmel-dfu
-#   LUFA bootloader  4096
+#   LUFA DFU     lufa-dfu
-#   USBaspLoader     2048
+#   QMK DFU      qmk-dfu
-OPT_DEFS += -DBOOTLOADER_SIZE=512
+#   atmega32a    bootloadHID
+BOOTLOADER = atmel-dfu
 
 
 # Build Options