Revert "[AMDGPU] Don’t marke the .note section as ALLOC"
This reverts commit 977cd661cf019039dec7ffdd15bf0ac500828c87.
It breaks OpenCL testing. OpenCL Runtime is using PT_LOAD information
to calculate memory for global variables. This commit should be relanded once
the OpenCL runtime stops relying on PT_LOAD information for calculating global
variable memory size.