kernel: Modify KERNEL_SU_VERSION logic and behavior (#696)

This patch modifies the following:
- Move the version addition logic in ksu.h to Makefile processing
- Print the current version number of KernelSU during make build

build test (normal):
 buildlog:
HOSTCC scripts/basic/bin2c Using .. as source for kernel -- KernelSU
version: 11055
  CHK     include/generated/utsrelease.h
  UPD     include/generated/utsrelease.h

 KernelSU software:
  KernelSU Working Version: 11055 (v) Superusers: 0 Modules: 0


![11055](https://github.com/tiann/KernelSU/assets/47409494/10506289-04d2-41c0-bd48-bad9f0dbdec5)

build test (missing .git file):
 buildlog:
HOSTCC scripts/basic/bin2c Using .. as source for kernel
../drivers/kernelsu/Makefile:23: "KSU_GIT_VERSION not defined! It is
better to make KernelSU a git submodule!"
  CHK     include/generated/utsrelease.h
  CHK     scripts/mod/devicetable-offsets.h

 KernelSU software:
  KernelSU Working Version: 16 (v) Superusers: 0 Modules: 0

The current kernel version 16 is too low for the manager to function
properly. Please upgrade to version 10977 or higher!


![16](https://github.com/tiann/KernelSU/assets/47409494/9ea877a7-7b91-4a27-b6ab-58ce6e1b386f)

(cherry picked from commit 0c38a1614a77d80de752aba20908e3f9d21660a8)
Change-Id: I570f2ee33db224e1a36770f847137f290ba9bcfd

Co-authored-by: stic-server-open <1138705738@qq.com>

kernel/ksu.h

@@ -4,16 +4,7 @@
 #include "linux/types.h"
 #include "linux/workqueue.h"
 
-#ifndef KSU_GIT_VERSION
-#warning                                                                       \
-	"KSU_GIT_VERSION not defined! It is better to make KernelSU a git submodule!"
-#define KERNEL_SU_VERSION (16)
-#else
-#define KERNEL_SU_VERSION                                                      \
-	(10000 + KSU_GIT_VERSION +                                             \
-	 200) // major * 10000 + git version + 200 for historical reasons
-#endif
-
+#define KERNEL_SU_VERSION KSU_VERSION
 #define KERNEL_SU_OPTION 0xDEADBEEF
 
 #define CMD_GRANT_ROOT 0