x86/topology: Make __max_die_per_package available unconditionally

mainline inclusion
from mainline-v5.11-rc5
commit 1eb8f690
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I7DX6V
CVE: NA

Reference: https://git.kernel.org/torvalds/c/1eb8f690bcb565a6600f8b6dcc78f7b239ceba17



---------------------------

commit 1eb8f690 upstream.

Move it outside of CONFIG_SMP in order to avoid ifdeffery at the usage
sites.

Fixes: 76e2fc63 ("x86/cpu/amd: Set __max_die_per_package on AMD")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210114111814.5346-1-bp@alien8.de


[fix conflict during backport]
Signed-off-by: Pu Wen <puwen@hygon.cn>