build: system_dlkm: Add avb hash footer

Add avb hash footer and zero pad image to resize
image to the partition size. Remove partition
size check to match with kleaf.

Bug: 200082547
Test: TH, Manual Verification
Signed-off-by: Ramji Jiyani <ramjiyani@google.com>
Change-Id: I6a113e2314b6f5437dacdcb13fa4edd50cce9fef
1 file changed