Update kernel to builds 8798673

git log --first-parent -100 --oneline --no-decorate 65aa3a930916..b2497fe1b9c8:
b2497fe1b9c8 ANDROID: Add CONFIG_KEXEC_FILE to Microdroid
8ec5927c0a88 ANDROID: GKI: db845c: Update symbols list and ABI
0082c521ea4c ANDROID: Adding Image.gz and boot-gz.img
f60f35c12101 ANDROID: Creating boot-img.tar.gz for aarch64

Test: treehugger
Bug: 237380780
Change-Id: Ib81cfb2421f6387eb6ea99d42e3de2ad4cd0d079
diff --git a/microdroid/kernel/arm64/prebuilt-info.txt b/microdroid/kernel/arm64/prebuilt-info.txt
index 14e88f0..f1f89fa 100644
--- a/microdroid/kernel/arm64/prebuilt-info.txt
+++ b/microdroid/kernel/arm64/prebuilt-info.txt
@@ -1,3 +1,3 @@
 {
-    "kernel-build-id": 8759913
+    "kernel-build-id": 8798673
 }