Enable 2 legacy serial ports for microdroid am: c95baf1065

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2110865

Change-Id: Iee1e7dcbd3c275c51c421a2034de55e0701b39a9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/microdroid/bootconfig.common b/microdroid/bootconfig.common
index eda95a2..362ff23 100644
--- a/microdroid/bootconfig.common
+++ b/microdroid/bootconfig.common
@@ -1,2 +1,3 @@
 androidboot.first_stage_console = 1
 androidboot.hardware = microdroid
+kernel.8250.nr_uarts = 2