Build input fuzzers for host

Currently, our fuzzers are only built for device. In this CL, we
unify some of the Android.bp definitions and allow building these for
host.

Bug: 271455682
Test: m checkinput
Change-Id: I2140c6ceb34aefb997d94ce36a4acdf9073594cc
diff --git a/services/inputflinger/Android.bp b/services/inputflinger/Android.bp
index 86b3bde..dc7c75a 100644
--- a/services/inputflinger/Android.bp
+++ b/services/inputflinger/Android.bp
@@ -106,6 +106,13 @@
                 "libstatspull",
                 "libstatssocket",
             ],
+            include_dirs: [
+                "bionic/libc/kernel/android/uapi/",
+                "bionic/libc/kernel/uapi",
+            ],
+            cflags: [
+                "-D__ANDROID_HOST__",
+            ],
         },
     },
 }