[AARCH64] Fix vst1q_f32_x2 implementation (#49273)
Summary:
Add memory operands to inline asm, that informs the compiler that this instruction writes to memory.
Fixes https://github.com/pytorch/pytorch/issues/48901
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49273
Reviewed By: walterddr
Differential Revision: D25512921
Pulled By: malfet
fbshipit-source-id: 474d070e1f7c2167b9958cbeb4e401dc0e4a930b