graphics/mesa-libs: Mark BROKEN on FreeBSD 11

FAILED: src/util/libmesa_util.a.p/build_id.c.o
cc -Isrc/util/libmesa_util.a.p -Isrc/util -I../src/util -Iinclude -I../include -Isrc -I../src -Isrc/mapi -I../src/mapi -Isrc/mesa -I../src/mesa -I../src/gallium/include -I../src/gallium/auxiliary -I/usr/local/include -fvisibility=hidden -fno-color-diagnostics -DNDEBUG -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -std=c99 -O3 -ffunction-sections -fdata-sections -DSTDC_CONSTANT_MACROS -DSTDC_FORMAT_MACROS -DSTDC_LIMIT_MACROS '-DPACKAGE_VERSION="21.1.5"' '-DPACKAGE_BUGREPORT="https://gitlab.freedesktop.org/mesa/mesa/-/issues"' -DENABLE_ST_OMX_BELLAGIO=0 -DENABLE_ST_OMX_TIZONIA=0 -DHAVE_X11_PLATFORM -DHAVE_XCB_PLATFORM -DGLX_INDIRECT_RENDERING -DGLX_DIRECT_RENDERING -DGLX_USE_DRM -DHAVE_DRM_PLATFORM -DETIME=ETIMEDOUT -DENABLE_SHADER_CACHE -DHAVE_BUILTIN_BSWAP32 -DHAVE___BUILTIN_BSWAP64 -DHAVE___BUILTIN_CLZ -DHAVE___BUILTIN_CLZLL -DHAVE___BUILTIN_CTZ -DHAVE___BUILTIN_EXPECT -DHAVE___BUILTIN_FFS -DHAVE___BUILTIN_FFSLL -DHAVE___BUILTIN_POPCOUNT -DHAVE___BUILTIN_POPCOUNTLL -DHAVE___BUILTIN_UNREACHABLE -DHAVE___BUILTIN_TYPES_COMPATIBLE_P -DHAVE_FUNC_ATTRIBUTE_CONST -DHAVE_FUNC_ATTRIBUTE_FLATTEN -DHAVE_FUNC_ATTRIBUTE_MALLOC -DHAVE_FUNC_ATTRIBUTE_PURE -DHAVE_FUNC_ATTRIBUTE_UNUSED -DHAVE_FUNC_ATTRIBUTE_WARN_UNUSED_RESULT -DHAVE_FUNC_ATTRIBUTE_WEAK -DHAVE_FUNC_ATTRIBUTE_FORMAT -DHAVE_FUNC_ATTRIBUTE_PACKED -DHAVE_FUNC_ATTRIBUTE_RETURNS_NONNULL -DHAVE_FUNC_ATTRIBUTE_ALIAS -DHAVE_FUNC_ATTRIBUTE_NORETURN -DHAVE_FUNC_ATTRIBUTE_VISIBILITY -DHAVE_UINT128 -D_GNU_SOURCE -DUSE_SSE41 -DUSE_GCC_ATOMIC_BUILTINS -DUSE_X86_64_ASM -DHAVE_SYS_SYSCTL_H -DHAVE_XLOCALE_H -DHAVE_DLFCN_H -DHAVE_EXECINFO_H -DHAVE_SYS_SHM_H -DHAVE_PTHREAD_NP_H -DHAVE_STRTOF -DHAVE_MKOSTEMP -DHAVE_FLOCK -DHAVE_STRTOK_R -DHAVE_POSIX_MEMALIGN -DHAVE_DIRENT_D_TYPE -DHAVE_STRTOD_L -DHAVE_DLADDR -DHAVE_DL_ITERATE_PHDR -DHAVE_ZLIB -DHAVE_ZSTD -DHAVE_COMPRESSION -DHAVE_PTHREAD -DHAVE_LIBDRM -DLLVM_AVAILABLE '-DMESA_LLVM_VERSION_STRING="12.0.1"' -DLLVM_IS_SHARED=1 -DDRAW_LLVM_AVAILABLE -DUSE_LIBGLVND=1 -DHAVE_LIBUNWIND -DHAVE_WAYLAND_PLATFORM -DWL_HIDE_DEPRECATED -DHAVE_DRI3 -DHAVE_DRI3_MODIFIERS -Werror=implicit-function-declaration -Werror=missing-prototypes -Werror=return-type -Werror=empty-body -Werror=incompatible-pointer-types -Werror=int-conversion -Wimplicit-fallthrough -Wno-missing-field-initializers -fno-math-errno -fno-trapping-math -Qunused-arguments -fno-common -Werror=format -Wformat-security -Wno-microsoft-enum-value -O2 -pipe -fstack-protector-strong -fno-strict-aliasing -fPIC -pthread -Werror=pointer-arith -Werror=gnu-empty-initializer -MD -MQ src/util/libmesa_util.a.p/build_id.c.o -MF src/util/libmesa_util.a.p/build_id.c.o.d -o src/util/libmesa_util.a.p/build_id.c.o -c ../src/util/build_id.c
../src/util/build_id.c:42:4: error: unknown type name 'Elf_Nhdr'

ElfW(Nhdr) nhdr;
^

../src/util/build_id.c:38:20: note: expanded from macro 'ElfW'
#define ElfW(type) Elf_##type

^

<scratch space>:108:1: note: expanded from here
Elf_Nhdr
^
../src/util/build_id.c:91:33: error: use of undeclared identifier 'Elf_Nhdr'

size_t offset = sizeof(ElfW(Nhdr)) +
                       ^

../src/util/build_id.c:38:20: note: expanded from macro 'ElfW'
#define ElfW(type) Elf_##type

^

<scratch space>:109:1: note: expanded from here
Elf_Nhdr
^
2 errors generated.
ninja: build stopped: subcommand failed.

Reference: https://gitlab.freedesktop.org/mesa/mesa/-/issues/1007