falcosecurity-libs DKMS FTBFS wrt Linux 6.3

[Impact]

falcosecurity-libs FTBFS wrt Linux 6.3:

...
In file included from ./include/linux/sched/signal.h:10,
                 from ./include/linux/rcuwait.h:6,
                 from ./include/linux/percpu-rwsem.h:7,
                 from ./include/linux/fs.h:33,
                 from ./include/linux/compat.h:17,
                 from /var/lib/dkms/scap/0.1.1dev+git20220316.e5c53d64/build/ppm_fillers.c:12:
/var/lib/dkms/scap/0.1.1dev+git20220316.e5c53d64/build/ppm_fillers.c: In function ‘f_proc_startupdate’:
./include/linux/cred.h:378:23: error: passing argument 1 of ‘inode_permission’ from incompatible pointer type [-Werror=incompatible-pointer-types]
  378 | current_cred()->xxx; \
      | ^
      | |
      | struct user_namespace *
...

[Fix]

Apply the attached patch.

[How to test]

Install the patched packet.

[Regression potential]

None, the fix is a conditional compilation only when Linux >= 6.3.