MFH: r433293

www/firefox: attempt to unbreak aarch64 after r431737

gfx/skia/skia/src/core/SkBitmapProcState_matrixProcs.cpp:(.text._ZN17SkBitmapProcState16chooseMatrixProcEb+0xc4): undefined reference to `RepeatX_RepeatY_Procs_neon'
gfx/skia/skia/src/core/SkBitmapProcState_matrixProcs.cpp:(.text._ZN17SkBitmapProcState16chooseMatrixProcEb+0x144): undefined reference to `ClampX_ClampY_Procs_neon'
gfx/skia/skia/src/core/SkBlitter_RGB16.cpp:(.text._ZN22SkRGB16_Opaque_Blitter5blitVEiiih+0x3c): undefined reference to `SkRGB16BlitterBlitV_neon(unsigned short*, int, unsigned long, unsigned int, unsigned int)'
[...]
/usr/bin/ld: libxul.so: hidden symbol `_Z24SkRGB16BlitterBlitV_neonPtimjj' isn't defined
/usr/bin/ld: final link failed: Bad value
c++: error: linker command failed with exit code 1 (use -v to see invocation)

Reported by: pkg-fallout
Approved by: ports-secteam blanket