tree fdd35cfc563408947eb4454d42dc52dc7349f6f5
parent 69e87311010a410cb8cb676c82d1642784211a0f
author Jiyong Park <jiyong@google.com> 1641446933 +0900
committer Jiyong Park <jiyong@google.com> 1641446933 +0900

ramdisk_module and dtb_prebuild properties are optional

The two properties are now optional, so that we can split boot.img into
boot.img that doesn't have ramdisk and init_boot.img that has only the
ramdisk.

Bug: N/A
Test: m com.android.virt
Change-Id: I5dc8b140893dfbcf69a8b5c099d23b9216217b53