Fix more compilation error with kernel 6.1 and make it possible to
compile.

Multiple fix are done due to kernel bump:
- PDE_DATA (now deprecated) to pde_data
- dev_addr now const and require some cast
- prandom_u32 (now deprecated) to get_random_u32

Also other minor fix for always true condition and tasklet type cast not
compatible.
Signed-off-by: NChristian Marangi <ansuelsmth@gmail.com>