tree ba63247d2d8d56c3b888721ec9b4e70d63ae47ad
parent 627ce86770dca98915d6d81b66841a15014019a0
author Yifan Hong <elsk@google.com> 1603318676 -0700
committer Yifan Hong <elsk@google.com> 1603387586 -0700

Add vendor-ramdisk image to Soong.

Add vendor_ramdisk_available and vendor_ramdisk attribute to
various rules. When a vendor_ramdisk variant of a module is
generated, it is installed to $OUT/vendor-ramdisk.

It is similar to a ramdisk image.
Test: m nothing -j

Change-Id: Ib2d16459f3094dbe21c3bdb7c016cb4b2bf62765