kernel: added compatibility for non-GKI devices

Co-authored-by: rsuntk <rsuntk@yukiprjkt.my.id>
Co-authored-by: ShirkNeko <109797057+ShirkNeko@users.noreply.github.com>
Signed-off-by: ShirkNeko <109797057+ShirkNeko@users.noreply.github.com>

kernel/ksud.h

@@ -1,6 +1,8 @@
 #ifndef __KSU_H_KSUD
 #define __KSU_H_KSUD
 
+#include <linux/types.h>
+
 #define KSUD_PATH "/data/adb/ksud"
 
 void on_post_fs_data(void);