trusty: Add vendor variant of libtrusty_coverage

We want to add coverage statistics to the trusty-ut-ctrl tool, which is
a vendor binary. Thus we need a vendor variant of libtrusty_coverage.
Merges system libtrusty_test and vendor libtrusty into a single
vendor_available library so that we can add vendor_available to
libtrusty_coverage and make it accessible from vendor tools.

Bug: 175221942
Test: make libtrusty_coverage
Change-Id: I68cc8f1c1580bda8591dbe744e9751474811576d

trusty/coverage/Android.bp

@@ -14,6 +14,7 @@
 
 cc_library {
     name: "libtrusty_coverage",
+    vendor_available: true,
     srcs: [
         "coverage.cpp",
     ],
@@ -21,8 +22,9 @@ cc_library {
         "include",
     ],
     static_libs: [
-        "libtrusty_test",
+        "libtrusty",
     ],
+
     shared_libs: [
         "libbase",
         "liblog",
@@ -36,7 +38,7 @@ cc_test {
     ],
     static_libs: [
         "libtrusty_coverage",
-        "libtrusty_test",
+        "libtrusty",
     ],
     shared_libs: [
         "libbase",

trusty/fuzz/Android.bp

@@ -39,7 +39,7 @@ cc_library {
     export_include_dirs: ["include"],
     static_libs: [
         "libFuzzer",
-        "libtrusty_test",
+        "libtrusty",
     ],
     shared_libs: [
         "libtrusty_coverage",

trusty/libtrusty/Android.bp

@@ -26,13 +26,8 @@ cc_defaults {
 
 cc_library {
     name: "libtrusty",
-    vendor: true,
-    defaults: ["libtrusty_defaults"],
-}
-
-// TODO(b/170753563): cc_fuzz can't deal with vendor components. Build libtrusty
-// for system.
-cc_test_library {
-    name: "libtrusty_test",
+    // TODO(b/170753563): cc_fuzz can't deal with vendor components. Build
+    // libtrusty for system and vendor.
+    vendor_available: true,
     defaults: ["libtrusty_defaults"],
 }