GMMK 2 WBG7 MCU compatibility (#16436)

* GMMK V2 QMK Compatibility

* fix problems

* Update keyboards/gmmk/gmmk2/config.h

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/gmmk/gmmk2/config.h

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Fix a minor problem

* Optimize the code

* Update config.h

* Update

* Update config.h

* Update keyboards/gmmk/gmmk2/p96/ansi/keymaps/via/config.h

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update config.h

* Update keyboards/gmmk/gmmk2/p96/iso/keymaps/via/config.h

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update config.h

* Update keyboards/gmmk/gmmk2/p65/ansi/rules.mk

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/gmmk/gmmk2/p96/ansi/keymaps/default/keymap.c

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/gmmk/gmmk2/p96/ansi/keymaps/via/keymap.c

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/gmmk/gmmk2/p96/ansi/rules.mk

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/gmmk/gmmk2/p96/iso/rules.mk

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/gmmk/gmmk2/p65/iso/rules.mk

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update config.h

* Update config.h

* Update config.h

* Modify device pid

* Add gmmk2_p96 keyboard.

* Add gmmk2_p96 keyboard.

* Update led matrix.

* Update led matrix.

* Delete eeprom_flash.c

* Update keyboards/gmmk/gmmk2/p96/ansi/rules.mk

Co-authored-by: Nick Brassel <nick@tzarc.org>

* Update from qmk develop branch

* Increased compatibility with wear_leveling.

* Update config.h

Co-authored-by: Joy <chang.li@westberrytech.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Nick Brassel <nick@tzarc.org>

keyboards/gmmk/gmmk2/p96/iso/keymaps/default/readme.md

@@ -0,0 +1 @@
+# ISO GMMKV2 96% Layout