Add Bootmagic Lite to QMK (#4215)

* Preliminary additon of bootmagic lite functionality

* Cleanup code

* Clean up bootmagic code

* Add documentation and clean up code

* Make 'lite' an option for BOOTMAGIC_ENABLE

* Update Templates with note about Bootmagic Lite option

* Detect Debounce variable

* Make sure debounce is a non-zero number

* Capitalize Bootmagic

* Capitalize bootmagic

* Update wording

* Re-add EEPROM reset, by popular demand

And add eeprom-less version to drashna userspace for his sanity

* Fix spacing

* Set BOOTMAGIC_ENABLE to use full/lite/off

And default yes to "full" for compatibility

* Add Bootmagic lite info to templates

* Remove text from makefiles

* Cleanup of makefile

* mention yes in bootmagic docs

* Wordsmitthing the docs

* Fix white spaces

* Readd default bootmagic setting, because it's necessary

1 files changed, 13 insertions, 1 deletions

diff --git a/tmk_core/common.mk b/tmk_core/common.mk
index 33bcc97b2..3844b13d4 100644
--- a/tmk_core/common.mk
+++ b/tmk_core/common.mk
@@ -61,14 +61,26 @@ endif
 
 
 # Option modules
-ifeq ($(strip $(BOOTMAGIC_ENABLE)), yes)
+BOOTMAGIC_ENABLE ?= no
+VALID_MAGIC_TYPES := yes full lite
+ifneq ($(strip $(BOOTMAGIC_ENABLE)), no)
+  ifeq ($(filter $(BOOTMAGIC_ENABLE),$(VALID_MAGIC_TYPES)),)
+    $(error BOOTMAGIC_ENABLE="$(BOOTMAGIC_ENABLE)" is not a valid type of magic)
+  endif
+  ifeq ($(strip $(BOOTMAGIC_ENABLE)), lite)
+      TMK_COMMON_DEFS += -DBOOTMAGIC_LITE
+      TMK_COMMON_DEFS += -DMAGIC_ENABLE
+      TMK_COMMON_SRC += $(COMMON_DIR)/magic.c
+  else
     TMK_COMMON_DEFS += -DBOOTMAGIC_ENABLE
     TMK_COMMON_SRC += $(COMMON_DIR)/bootmagic.c
+  endif
 else
     TMK_COMMON_DEFS += -DMAGIC_ENABLE
     TMK_COMMON_SRC += $(COMMON_DIR)/magic.c
 endif
 
+
 ifeq ($(strip $(MOUSEKEY_ENABLE)), yes)
     TMK_COMMON_SRC += $(COMMON_DIR)/mousekey.c
     TMK_COMMON_DEFS += -DMOUSEKEY_ENABLE