Fails to build on i386 and s390x

Hi,

Thanks for your work on isal.
The corresponding debian package (version 2.30) does not build on i386 and s390x

In `i386`, there's a number of:
```
raid/raid_multibinary_i32.s:44: error: instruction not supported in 32-bit mode
raid/raid_multibinary_i32.s:111: ... from macro `mbin_interface' defined here
raid/raid_multibinary_i32.s:45: error: instruction not supported in 32-bit mode
raid/raid_multibinary_i32.s:111: ... from macro `mbin_interface' defined here
raid/raid_multibinary_i32.s:46: error: instruction not supported in 32-bit mode
raid/raid_multibinary_i32.s:111: ... from macro `mbin_interface' defined here
raid/raid_multibinary_i32.s:47: error: instruction not supported in 32-bit mode
raid/raid_multibinary_i32.s:111: ... from macro `mbin_interface' defined here
```

Full log [here](https://buildd.debian.org/status/fetch.php?pkg=libisal&arch=i386&ver=2.30.0-4&stamp=1635477973&raw=0)

In `s390x`, tests segfault.
```
/usr/bin/make --no-print-directory check-TESTS
FAIL: erasure_code/gf_vect_mul_test
FAIL: erasure_code/erasure_code_test
PASS: erasure_code/gf_inverse_test
FAIL: erasure_code/erasure_code_update_test
PASS: raid/xor_gen_test
PASS: raid/pq_gen_test
PASS: raid/xor_check_test
PASS: raid/pq_check_test
PASS: crc/crc16_t10dif_test
PASS: crc/crc16_t10dif_copy_test
PASS: crc/crc64_funcs_test
PASS: crc/crc32_funcs_test
./build-aux/test-driver: line 112: 2937012 Segmentation fault "$@" >> "$log_file" 2>&1
FAIL: igzip/igzip_rand_test
PASS: igzip/igzip_wrapper_hdr_test
PASS: igzip/checksum32_funcs_test
PASS: mem/mem_zero_detect_test
============================================================================
Testsuite summary for libisal 2.30.0
============================================================================
# TOTAL: 16
# PASS: 12
# SKIP: 0
# XFAIL: 0
# FAIL: 4
# XPASS: 0
# ERROR: 0
============================================================================
See ./test-suite.log
Please report to sg.support.isal@intel.com
```

Full log [here](https://buildd.debian.org/status/fetch.php?pkg=libisal&arch=s390x&ver=2.30.0-4&stamp=1635471504&raw=0)

Would you please consider fixing these?
Thanks,
Nilesh