Revert renaming symbols in KernelSU driver

- In order to reduce the extra patch code and increase the rate of hunk succeed, we do not rename the symbols in KernelSU drvier but instead do it all in kernel/kallsym.c

- Make susfs_starts_with() global as it maybe useful in future

Co-authored-by: simonpunk <simonpunk2016@gmail.com>

kernel/selinux/rules.c

@@ -38,11 +38,11 @@ static struct policydb *get_policydb(void)
 
 static DEFINE_MUTEX(ksu_rules);
 
-void ksu_apply_kernelsu_rules()
+void apply_kernelsu_rules()
 {
 	struct policydb *db;
 
-	if (!ksu_getenforce()) {
+	if (!getenforce()) {
 		pr_info("SELinux permissive or disabled, apply rules!\n");
 	}
 
@@ -236,7 +236,7 @@ static void reset_avc_cache()
 	selinux_xfrm_notify_policyload();
 }
 
-int ksu_handle_sepolicy(unsigned long arg3, void __user *arg4)
+int handle_sepolicy(unsigned long arg3, void __user *arg4)
 {
 	struct policydb *db;
 
@@ -244,7 +244,7 @@ int ksu_handle_sepolicy(unsigned long arg3, void __user *arg4)
 		return -1;
 	}
 
-	if (!ksu_getenforce()) {
+	if (!getenforce()) {
 		pr_info("SELinux permissive or disabled when handle policy!\n");
 	}