Currently, minidriver build is broken on mingw. Let's make it work again.
For this, include adapted cardmod-mingw-compat.h with few function argument
decorations from Alon Bar-Lev's old build repository to make mingw build
almost self-contained - still requires cardmod.h from CNG, however.
Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>