Revert "Move ramdisk to the new init_boot partition"

Revert "Update bootloader, u-boot tools to builds 8053389"

Revert submission 1941153-uboot_micro

Reason for revert: broke presubmit

Reverted Changes:
I9f6100f6a:Update bootloader, u-boot tools to builds 8053389
I7024f20eb:Move ramdisk to the new init_boot partition

Change-Id: Ib1166157d77f51f7aa3e3ebd71328b05ed461fde
diff --git a/microdroid/Android.bp b/microdroid/Android.bp
index 6c96cbf..3eaf124 100644
--- a/microdroid/Android.bp
+++ b/microdroid/Android.bp
@@ -221,6 +221,7 @@
 
 bootimg {
     name: "microdroid_boot-5.10",
+    ramdisk_module: "microdroid_ramdisk-5.10",
     // We don't have kernel for arm and x86. But Soong demands one when it builds for
     // arm or x86 target. Satisfy that by providing an empty file as the kernel.
     kernel_prebuilt: "empty_kernel",
@@ -250,16 +251,6 @@
     avb_private_key: ":microdroid_sign_key",
 }
 
-bootimg {
-    name: "microdroid_init_boot",
-    ramdisk_module: "microdroid_ramdisk-5.10",
-    kernel_prebuilt: "empty_kernel",
-    header_version: "4",
-    partition_name: "init_boot",
-    use_avb: true,
-    avb_private_key: ":microdroid_sign_key",
-}
-
 android_filesystem {
     name: "microdroid_ramdisk-5.10",
     deps: [
@@ -560,7 +551,6 @@
         "microdroid_vendor_boot-5.10",
         "microdroid",
         "microdroid_boot-5.10",
-        "microdroid_init_boot",
     ],
 }
 
diff --git a/microdroid/microdroid.json b/microdroid/microdroid.json
index 9e630f8..8496052 100644
--- a/microdroid/microdroid.json
+++ b/microdroid/microdroid.json
@@ -8,10 +8,6 @@
           "path": "/apex/com.android.virt/etc/fs/microdroid_boot-5.10.img"
         },
         {
-          "label": "init_boot_a",
-          "path": "/apex/com.android.virt/etc/fs/microdroid_init_boot.img"
-        },
-        {
           "label": "vendor_boot_a",
           "path": "/apex/com.android.virt/etc/fs/microdroid_vendor_boot-5.10.img"
         },