kernel: refine some and relabel them correctly

1. We checks for CONFIG_KDP_CRED inside kernel/cred.c
2. If we got CONFIG_KDP_CRED, grep command will return 0
3. Then we do another checks inside kernel_compat.c
4. If UH, RKP and KDP are enabled, stop the compilation immedietly.

- We should not checks is it a samsung kernel or no, just
checks the UH drivers, since KDP and RKP is depends on it.
- Give an advise to kernel dev to remove all UH drivers (not hooks).

Signed-off-by: rsuntk <rissu.ntk@gmail.com>

kernel: refine get_ksu_state()

Using int for get_ksu_state is not effective.
Instead we should use boolean value instead because its more easy
and simple things up.

get_ksu_state() will return true if enable_kernelsu greater or equal than 1.
and return false if enable_kernelsu less than 1.

previously:
if (get_ksu_state() < 1)

now:
if (!get_ksu_state())

Signed-off-by: rsuntk <rissu.ntk@gmail.com>

manager: Hide namespace config in app profiles (#2426)

This is never implemented in kernel (and likely never will be), so let's
remove it from UI for now to avoid misleading users.

kernel: fmt, and make compat syscalls as kconfig option instead

Signed-off-by: Rissu <90097027+rsuntk@users.noreply.github.com>