[Bug target/122953] __ARM_PCS_AAPCS64 is incorrectly defined for aarch64-mingw

[saurabh.jha at arm dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122953

--- Comment #1 from Saurabh Jha <saurabh.jha at arm dot com> ---
Here's a fix for this
https://gcc.gnu.org/pipermail/gcc-patches/2026-March/710556.html