tinker: Initial support (#140)

* tinker: initial support

* Fix info

* Fix uboot defconfig

* Split kernel config

* Fix name

* Add post-image

* Init different boot

* Add SPL images

* Dynamic rauc config

* Support SPL for OTA

* Fix expand script style

* Fix SPL

* Bump build u-boot

* Cleanup

* Add cmd for scritps

* Use kernel from armbian

* Fix u-boot

* Add bluetooth support

* Fix bt

* Fix env

* Change uart debug like rpi

* move config

buildroot-external/misc/rauc-hook

@@ -12,6 +12,11 @@ if [ "${RAUC_SLOT_CLASS}" = "boot" ]; then
     fi
 fi
 
+# Handle spl install
+if [ "${RAUC_SLOT_CLASS}" = "spl" ]; then
+    /usr/lib/rauc/install-spl "${RAUC_IMAGE_NAME}"
+fi
+
 ##
 # Fixups