[microdroid] Rename the partition name of microdroid_kernel to boot

Bug: 262853105
Test: atest libpvmfw_avb.test
Change-Id: Ic0d1f6b2c1023337a5fa2b8251fb40d80e162f37
diff --git a/pvmfw/avb/src/verify.rs b/pvmfw/avb/src/verify.rs
index 0bab960..1e3f8ed 100644
--- a/pvmfw/avb/src/verify.rs
+++ b/pvmfw/avb/src/verify.rs
@@ -362,7 +362,7 @@
 }
 
 impl PartitionName {
-    const KERNEL_PARTITION_NAME: &[u8] = b"bootloader\0";
+    const KERNEL_PARTITION_NAME: &[u8] = b"boot\0";
     const INITRD_NORMAL_PARTITION_NAME: &[u8] = b"initrd_normal\0";
     const INITRD_DEBUG_PARTITION_NAME: &[u8] = b"initrd_debug\0";