devel/intel-graphics-compiler: mark BROKEN on i386 after 53d5d29ffe58

FAILED: IGC/Release/libigc.so.1.0.1
: && /usr/bin/c++ ... -o IGC/Release/libigc.so.1.0.1 ...
LLVM ERROR: out of memory
PLEASE submit a bug report to https://bugs.freebsd.org/submit/ and include the crash backtrace.
Stack dump:
0. Program arguments: /usr/bin/ld --eh-frame-hdr -Bshareable --hash-style=both --enable-new-dtags -m elf_i386_fbsd -o IGC/Release/libigc.so.1.0.1 ...
#0 0x019dc334 (/usr/bin/ld+0x19dc334)
#1 0x019dc73e (/usr/bin/ld+0x19dc73e)
#2 0x019da64e (/usr/bin/ld+0x19da64e)
#3 0x019dca0c (/usr/bin/ld+0x19dca0c)
#4 0x22ef0319 (/lib/libthr.so.3+0x18319)
c++: error: unable to execute command: Abort trap (core dumped)
c++: error: linker command failed due to signal (use -v to see invocation)

Reported by: pkg-fallout