Migrate MCU and BOOTLOADER to data-driven (#19529)

keyboards/skippys_custom_pcs/roopad/info.json

@@ -8,6 +8,8 @@
         "pid": "0x0001",
         "device_version": "0.0.1"
     },
+    "processor": "atmega32u4",
+    "bootloader": "atmel-dfu",
     "layouts": {
         "LAYOUT": {
             "layout": [{"label":"Num Lock", "x":1.5, "y":0}, {"label":"/", "x":2.5, "y":0}, {"label":"*", "x":3.5, "y":0}, {"label":"-", "x":4.5, "y":0}, {"x":0, "y":1}, {"label":"7", "x":1.5, "y":1}, {"label":"8", "x":2.5, "y":1}, {"label":"9", "x":3.5, "y":1}, {"label":"+", "x":4.5, "y":1, "h":2}, {"x":0, "y":2}, {"label":"4", "x":1.5, "y":2}, {"label":"5", "x":2.5, "y":2}, {"label":"6", "x":3.5, "y":2}, {"x":0, "y":3}, {"label":"1", "x":1.5, "y":3}, {"label":"2", "x":2.5, "y":3}, {"label":"3", "x":3.5, "y":3}, {"label":"Enter", "x":4.5, "y":3, "h":2}, {"x":0, "y":4}, {"label":"0", "x":1.5, "y":4, "w":2}, {"label":".", "x":3.5, "y":4}]

keyboards/skippys_custom_pcs/roopad/rules.mk

@@ -1,12 +1,6 @@
-# MCU name
-MCU = atmega32u4
-
 # Processor frequency
 F_CPU = 8000000
 
-# Bootloader selection
-BOOTLOADER = atmel-dfu
-
 # Build Options
 #   change yes to no to disable
 #