danielinux/gadget-kempston: Convert old Kempston Joysticks to USB

Convert old Kempston Joysticks to USB

Daniele Lacamera 94866bb676 Initial import: kempston mod pinout		5 月之前
pico-sdk	94866bb676 Initial import: kempston mod pinout	2 月之前
src	94866bb676 Initial import: kempston mod pinout	2 月之前
.gitignore	94866bb676 Initial import: kempston mod pinout	2 月之前
CMakeDoxyfile.in	94866bb676 Initial import: kempston mod pinout	2 月之前
CMakeDoxygenDefaults.cmake	94866bb676 Initial import: kempston mod pinout	2 月之前
CMakeLists.txt	94866bb676 Initial import: kempston mod pinout	2 月之前
Makefile	94866bb676 Initial import: kempston mod pinout	2 月之前
cmake_install.cmake	94866bb676 Initial import: kempston mod pinout	2 月之前