[HIP] fix stack marking for -fgpu-rdc (#72782)

HIP toolchain uses llvm-mc to generate a host object embedding device
binary for -fgpu-rdc. Due to lack of .note.GNU-stack section, the
generated relocatable has executable stack marking, which disables
protection from executable stack for any HIP programs compiled with
-fgpu-rdc.

This patch adds .note.GNU-stack section to the input to llvm-mc to fix
the executable stack marking.

Fixes: https://github.com/llvm/llvm-project/issues/71711