misc: add kernel setup script

kernel/setup.sh

@@ -0,0 +1,19 @@
+#! /bin/bash
+
+set -x
+
+git clone https://github.com/tiann/KernelSU
+
+GKI_ROOT=$(pwd)
+
+echo "[+] GKI_ROOT: $GKI_ROOT"
+echo "[+] Copy kernel su driver to $GKI_ROOT/common/drivers"
+
+ln -sf $(pwd)/KernelSU/kernel $GKI_ROOT/common/drivers/kernelsu
+
+echo "[+] Add kernel su driver to Makefile"
+
+DRIVER_MAKEFILE=$GKI_ROOT/common/drivers/Makefile
+grep -q "kernelsu" $DRIVER_MAKEFILE || echo "obj-y += kernelsu/" >> $DRIVER_MAKEFILE
+
+echo "[+] Done."