multimedia/librespot: fix build on powerpc64le
/wrkdirs/usr/ports/multimedia/librespot/work/librespot-0.6.0/cargo-crates/aws-lc-sys-0.22.0/aws-lc/crypto/fipsmodule/cpucap/cpu_ppc64le.c:72:28: error: call to undeclared function 'getauxval'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration] 72 | OPENSSL_ppc64le_hwcap2 = getauxval(AT_HWCAP2); | ^ 1 error generated.