suppress some warning in openjdk11 build?

Any objections if I suppress some warning in openjdk11?

It save a couple of megabytes of log file and makes it possible to open the poudriere log on my mobile phone 😀.
Search for "[-W" in https://pkg-status.freebsd.org/beefy24/data/main-amd64-default/pa48e645bda85_s8234c1899b/logs/openjdk11-11.0.29+7.1.log for an example of the amount of output these warnings generate.
 
diff --git a/java/openjdk11/Makefile b/java/openjdk11/Makefile
index 1548c2e3fa6b..85f308235b92 100644
--- a/java/openjdk11/Makefile
+++ b/java/openjdk11/Makefile
@@ -171,6 +172,8 @@ CFLAGS+=    -Wl,-rpath=${LOCALBASE}/lib/gcc${GCC_DEFAULT}
 CXXFLAGS+=     -Wl,-rpath=${LOCALBASE}/lib/gcc${GCC_DEFAULT}
 CONFIGURE_ARGS+=--disable-precompiled-headers
 .else
+# it is up to upstream project to fix these or not
+CFLAGS+=       -Wno-deprecated-builtins -Wno-inline-asm -Wno-unknown-attributes
 MAKE_ENV+=     USE_CLANG=true
 .if ${ARCH:Mpowerpc64*}
 LLVM_VER=      12
I have a ports commit bit so I can commit this.

Regards,
Ronald.