Revert "Migrate to avb_add_hash_footer"

This reverts commit 26eca1fd2f8d13cd44fbff2ff031eaa4352fd534.

Reason for revert: Broke x86 build

Change-Id: Ia73721f073268aa059f577ab83afd3034c8c3ee5
diff --git a/apex/sign_virt_apex.py b/apex/sign_virt_apex.py
index 8f717d4..1c0714e 100644
--- a/apex/sign_virt_apex.py
+++ b/apex/sign_virt_apex.py
@@ -360,17 +360,17 @@
 # dict of (key, file) for re-sign/verification. keys are un-versioned for readability.
 virt_apex_files = {
     'bootloader.pubkey': 'etc/microdroid_bootloader.avbpubkey',
-    'bootloader': 'etc/fs/microdroid_bootloader',
+    'bootloader': 'etc/microdroid_bootloader',
     'boot.img': 'etc/fs/microdroid_boot-5.10.img',
     'vendor_boot.img': 'etc/fs/microdroid_vendor_boot-5.10.img',
     'init_boot.img': 'etc/fs/microdroid_init_boot.img',
     'super.img': 'etc/fs/microdroid_super.img',
     'vbmeta.img': 'etc/fs/microdroid_vbmeta.img',
     'vbmeta_bootconfig.img': 'etc/fs/microdroid_vbmeta_bootconfig.img',
-    'bootconfig.normal': 'etc/fs/microdroid_bootconfig.normal',
-    'bootconfig.app_debuggable': 'etc/fs/microdroid_bootconfig.app_debuggable',
-    'bootconfig.full_debuggable': 'etc/fs/microdroid_bootconfig.full_debuggable',
-    'uboot_env.img': 'etc/fs/uboot_env.img'
+    'bootconfig.normal': 'etc/microdroid_bootconfig.normal',
+    'bootconfig.app_debuggable': 'etc/microdroid_bootconfig.app_debuggable',
+    'bootconfig.full_debuggable': 'etc/microdroid_bootconfig.full_debuggable',
+    'uboot_env.img': 'etc/uboot_env.img'
 }