Supress -Wunnecessary-virtual-specifier

... to make Android build happy (see ag/40601825).

Change-Id: I8bc070b1c60f96b8074b47d48d087d544b3b27cd
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/77508
Commit-Queue: Shahbaz Youssefi <syoussefi@google.com>
Tested-by: Jason Macnak <natsu@google.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@google.com>
Tested-by: Shahbaz Youssefi <syoussefi@google.com>
Presubmit-Ready: Jason Macnak <natsu@google.com>

third_party/llvm-16.0/Android.bp

diff --git a/third_party/llvm-16.0/Android.bp b/third_party/llvm-16.0/Android.bp
index 92065a0..89a2881 100644
--- a/third_party/llvm-16.0/Android.bp
+++ b/third_party/llvm-16.0/Android.bp
@@ -1498,6 +1498,7 @@
 
     cflags: [
         "-Wno-implicit-fallthrough",
+        "-Wno-unnecessary-virtual-specifier",
         "-Wno-unreachable-code-loop-increment",
         "-Wno-unused-parameter",
         "-Wno-unused-variable",

third_party/llvm-16.0/scripts/template_Android.bp

diff --git a/third_party/llvm-16.0/scripts/template_Android.bp b/third_party/llvm-16.0/scripts/template_Android.bp
index 00b674b..974ba14 100644
--- a/third_party/llvm-16.0/scripts/template_Android.bp
+++ b/third_party/llvm-16.0/scripts/template_Android.bp
@@ -72,6 +72,7 @@
 
     cflags: [
         "-Wno-implicit-fallthrough",
+        "-Wno-unnecessary-virtual-specifier",
         "-Wno-unreachable-code-loop-increment",
         "-Wno-unused-parameter",
         "-Wno-unused-variable",