Fix following error when building 32bit arm targets with kmod-crypto-sha512
ERROR: module '/home/user/openwrt/build_dir/target-arm_xscale_musl_eabi/linux-kirkwood_generic/linux-5.15.109/arch/arm/crypto/sha512-arm.ko' is missing.
Signed-off-by: Lu jicong <jiconglu58@gmail.com>