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

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!

(cherry picked from commit 0c38a1614a77d80de752aba20908e3f9d21660a8)
Change-Id: I570f2ee33db224e1a36770f847137f290ba9bcfd
Co-authored-by: stic-server-open <1138705738@qq.com>