Mark libelf static lib as vendor_available

This commit adds `vendor_available: true` to libelf static lib so that
some vendors can use libelf static lib in their tools.

Bug: 74094531
Test: aosp_walleye-userdebug builds
Change-Id: I4a4ab3de49da0769ae2749f63432fa16e8a774ab
diff --git a/Android.bp b/Android.bp
index 754a6d7..b591647 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,6 +1,7 @@
 cc_library_static {
     name: "libelf_headers",
     host_supported: true,
+    vendor_available: true,
     export_include_dirs: [
         ".",
         "lib",
diff --git a/libelf/Android.bp b/libelf/Android.bp
index e971b6b..cc4306c 100644
--- a/libelf/Android.bp
+++ b/libelf/Android.bp
@@ -15,6 +15,7 @@
 cc_library_static {
     name: "libelf",
     host_supported: true,
+    vendor_available: true,
 
     srcs:  [
         "elf32_checksum.c",