rust: Add rust_ffi_static vendor ramdisk Support

Similar to our vendor support, this adds support for linking rust static
libraries to vendor ramdisk cc modules.

A bug fix is also included where a restriction against setting rust_ffi
vendor-specific was not being enforced.

Bug: 179397942
Test: Example modules link, Soong tests pass.
Change-Id: I737cdf0c2f49ab349bcea2a0429e6298ebc1313e
diff --git a/cc/testing.go b/cc/testing.go
index 3a5bd17..45e5312 100644
--- a/cc/testing.go
+++ b/cc/testing.go
@@ -43,6 +43,7 @@
 			name: "libatomic",
 			defaults: ["linux_bionic_supported"],
 			vendor_available: true,
+			vendor_ramdisk_available: true,
 			product_available: true,
 			recovery_available: true,
 			native_bridge_supported: true,
@@ -52,6 +53,7 @@
 		toolchain_library {
 			name: "libcompiler_rt-extras",
 			vendor_available: true,
+			vendor_ramdisk_available: true,
 			product_available: true,
 			recovery_available: true,
 			src: "",
@@ -60,6 +62,7 @@
 		toolchain_library {
 			name: "libclang_rt.builtins-arm-android",
 			vendor_available: true,
+			vendor_ramdisk_available: true,
 			product_available: true,
 			recovery_available: true,
 			native_bridge_supported: true,
@@ -69,6 +72,7 @@
 		toolchain_library {
 			name: "libclang_rt.builtins-aarch64-android",
 			vendor_available: true,
+			vendor_ramdisk_available: true,
 			product_available: true,
 			recovery_available: true,
 			native_bridge_supported: true,
@@ -93,6 +97,7 @@
 		toolchain_library {
 			name: "libclang_rt.builtins-i686-android",
 			vendor_available: true,
+			vendor_ramdisk_available: true,
 			product_available: true,
 			recovery_available: true,
 			native_bridge_supported: true,
@@ -103,6 +108,7 @@
 			name: "libclang_rt.builtins-x86_64-android",
 			defaults: ["linux_bionic_supported"],
 			vendor_available: true,
+			vendor_ramdisk_available: true,
 			product_available: true,
 			recovery_available: true,
 			native_bridge_supported: true,
@@ -113,6 +119,7 @@
 			name: "libunwind",
 			defaults: ["linux_bionic_supported"],
 			vendor_available: true,
+			vendor_ramdisk_available: true,
 			product_available: true,
 			recovery_available: true,
 			native_bridge_supported: true,
@@ -238,6 +245,7 @@
 		cc_library {
 			name: "libprofile-extras",
 			vendor_available: true,
+			vendor_ramdisk_available: true,
 			product_available: true,
 			recovery_available: true,
 			native_coverage: false,
@@ -248,6 +256,7 @@
 		cc_library {
 			name: "libprofile-clang-extras",
 			vendor_available: true,
+			vendor_ramdisk_available: true,
 			product_available: true,
 			recovery_available: true,
 			native_coverage: false,
@@ -319,6 +328,7 @@
 			system_shared_libs: [],
 			stl: "none",
 			vendor_available: true,
+			vendor_ramdisk_available: true,
 			product_available: true,
 			recovery_available: true,
 			host_supported: true,
@@ -356,6 +366,7 @@
 			stl: "none",
 			host_supported: false,
 			vendor_available: true,
+			vendor_ramdisk_available: true,
 			product_available: true,
 			recovery_available: true,
 			min_sdk_version: "29",
@@ -380,6 +391,7 @@
 			defaults: ["linux_bionic_supported"],
 			recovery_available: true,
 			vendor_available: true,
+			vendor_ramdisk_available: true,
 			product_available: true,
 			native_bridge_supported: true,
 			stl: "none",