net-p2p/qtum: Mark as broken on i386

c++ -std=c++11 -DHAVE_CONFIG_H -I. -I../src/config -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -DQTUM_BUILD -I./cryptopp -I./cryptopp/include -DQTUM_BUILD -DHAVE_BUILD_INFO -D__STDC_FORMAT_MACROS -Wstack-protector -fstack-protector-all -DETH_FATDB=1 -DNDEBUG -fPIC -O2 -g2 -O2 -pipe -fstack-protector -fno-strict-aliasing -MT cryptopp/cryptopp_libcryptopp_a-sha.o -MD -MP -MF cryptopp/.deps/cryptopp_libcryptopp_a-sha.Tpo -c -o cryptopp/cryptopp_libcryptopp_a-sha.o test -f 'cryptopp/sha.cpp' || echo './'cryptopp/sha.cpp
cryptopp/sha.cpp:1288:2: error: invalid operand for instruction

ASJ(    jnz,    0, b)
^

./cryptopp/cpu.h:469:23: note: expanded from macro 'ASJ'

#define ASJ(x, y, z) GNU_ASJ(x, y, z)
                     ^

./cryptopp/cpu.h:463:27: note: expanded from macro 'GNU_ASJ'

#define GNU_ASJ(x, y, z) #x " " #y #z ";" NEW_LINE
                         ^

<scratch space>:219:2: note: expanded from here
"jnz"
^
<inline asm>:80:1: note: instantiated into assembly here
jnz 0b;
^