Set default recovery USB vendor/product IDs.

Add system properties to let vendors customize the recovery/fastbootd
USB IDs.

Test: `adb reboot fastboot && fastboot wait-for-device && lsusb -d 18d1:`
Change-Id: I70881f27d579dd54371f59a6a76f9b1f80ce9b47
diff --git a/target/product/base_vendor.mk b/target/product/base_vendor.mk
index fbc6ccc..8d257bf 100644
--- a/target/product/base_vendor.mk
+++ b/target/product/base_vendor.mk
@@ -29,6 +29,11 @@
     shell_and_utilities_recovery \
     watchdogd.recovery \
 
+PRODUCT_VENDOR_PROPERTIES += \
+    ro.recovery.usb.vid?=18D1 \
+    ro.recovery.usb.adb.pid?=D001 \
+    ro.recovery.usb.fastboot.pid?=4EE0 \
+
 # These had been pulled in via init_second_stage.recovery, but may not be needed.
 PRODUCT_HOST_PACKAGES += \
     e2fsdroid \