volk_32fc_s32f_atan2_32f: Add NaN tests for avx2 and avx2_fma code #819

Job	Run time
Build static on ubuntu-latest	1m 21s
build-macos	1m 3s
Build on ubuntu-20.04 g++-7	1m 6s
Build on ubuntu20.04 aarch64 g++-8	6m 20s
build-windows	1m 35s
Build on ubuntu-20.04 g++-8	48s
Build on ubuntu20.04 aarch64 g++-9	7m 6s
Build on ubuntu-latest g++-9	1m 10s
Build on ubuntu-latest g++-10	1m 33s
Build on ubuntu20.04 aarch64 g++-10	6m 28s
Build on ubuntu-20.04 clang-7	1m 1s
Build on ubuntu22.04 aarch64 g++-12	6m 56s
Build on ubuntu-20.04 clang-8	56s
Build on ubuntu20.04 aarch64 clang-9	10m 32s
Build on ubuntu-20.04 clang-9	55s
Build on ubuntu20.04 aarch64 clang-10	10m 51s
Build on ubuntu-20.04 clang-10	1m 4s
Build on ubuntu22.04 aarch64 clang-14	10m 2s
Build on ubuntu-20.04 clang-11	1m 6s
Build on ubuntu22.04 armv7 g++-12	6m 2s
Build on ubuntu-latest clang-12	1m 22s
Build on ubuntu22.04 ppc64le g++-12	6m 36s
Build on ubuntu-latest clang-13	1m 4s
Build on ubuntu-latest clang-14	55s
Build on ubuntu22.04 s390x g++-12	5m 29s
Build on ubuntu22.04 riscv64 g++-12	5m 43s
	1h 39m 4s

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