build failed for arm

OS: ubuntu24.04
Zig: 0.14.0-dev.1304+7d54c62c8
branch: main

I also try to build on ubuntu18.04(at company), it got same error.

compile command: zig build -Dtarget=arm-linux-gnueabihf

build log:
[build.log](https://github.com/user-attachments/files/16741050/build.log)

some log messages;
```log
/home/vagrant/git/ffmpeg/libavcodec/arm/hevcdsp_qpel_neon.S:739:9: note: while in macro instantiation
hevc_put_qpel_uw_hXvY_neon_8 qpel_filter_3, qpel_filter_3_32b
^
:10:9: error: instruction requires: NEON
vadd.u16 q7, q13
^
...

/home/vagrant/git/ffmpeg/libavcodec/arm/hevcdsp_qpel_neon.S:889:9: error: instruction requires: NEON
vshll.u8 q12, d4, #6
^
/home/vagrant/git/ffmpeg/libavcodec/arm/hevcdsp_qpel_neon.S:890:9: error: instruction requires: NEON
vshll.u8 q13, d5, #6
^
/home/vagrant/git/ffmpeg/libavcodec/arm/hevcdsp_qpel_neon.S:891:9: error: instruction requires: fp registers
vstm r0, {q8, q9, q10, q11, q12, q13}
^
/home/vagrant/git/ffmpeg/libavcodec/arm/hevcdsp_qpel_neon.S:900:9: error: invalid instruction
vld1.8 {q0, q1}, [r1]
^
/home/vagrant/git/ffmpeg/libavcodec/arm/hevcdsp_qpel_neon.S:902:9: error: invalid instruction
vld1.8 {q2, q3}, [r1], r2
^
/home/vagrant/git/ffmpeg/libavcodec/arm/hevcdsp_qpel_neon.S:905:9: error: instruction requires: NEON
```