Build fastbootd for recovery (#18)

Needed for devices with dynamic partitions.

Co-authored-by: Luca Weiss <luca.weiss@fairphone.com>

Author: z3ntu

device.mk

@@ -59,3 +59,7 @@ PRODUCT_SOONG_NAMESPACES += \
 # healthd for chargermode
 PRODUCT_PACKAGES += \
     healthd
+
+# fastbootd for recovery
+PRODUCT_PACKAGES += \
+    fastbootd