Use bootconfig

androidboot.* parameters now passed via bootconfig

Bug: 185211964
Test: atest MicrodroidHostTestCases
Change-Id: I686dbbbcd4fffa7598130139b3bcbe9ee798d666
diff --git a/microdroid/bootconfig.common b/microdroid/bootconfig.common
new file mode 100644
index 0000000..eda95a2
--- /dev/null
+++ b/microdroid/bootconfig.common
@@ -0,0 +1,2 @@
+androidboot.first_stage_console = 1
+androidboot.hardware = microdroid