axolotl-shiftos: add own blob extraction scripts

Copy-pasted from open source part and path to android
root adjusted.

Change-Id: Idc8e089d3fe080a23c8da4b1de986feeecf4a11e
Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>
diff --git a/axolotl.mk b/axolotl.mk
index 1600acb..36415a2 100644
--- a/axolotl.mk
+++ b/axolotl.mk
@@ -12,3 +12,13 @@
 
 # Override product name for SHIFT.
 PRODUCT_NAME := axolotl
+
+#############################################################
+
+# Widevine
+PRODUCT_PACKAGES += \
+    android.hardware.drm@1.4-service.widevine \
+
+PRODUCT_PACKAGES += \
+    libwvdrmengine \
+    libwvhidl \