add main branch files

kernel/Kconfig

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+menu "KernelSU"
+
+config KSU
+	tristate "KernelSU function support"
+	depends on OVERLAY_FS
+	default y
+	help
+	  Enable kernel-level root privileges on Android System.
+	  To compile as a module, choose M here: the
+	  module will be called kernelsu.
+
+config KSU_DEBUG
+	bool "KernelSU debug mode"
+	depends on KSU
+	default n
+	help
+	  Enable KernelSU debug mode.
+
+config KSU_HOOK
+  bool "Enable KernelSU Hook"
+  default n
+  help
+    This option enables the KernelSU Hook feature. If enabled, it will
+    override the kernel version check and enable the hook functionality.
+
+
+endmenu