[PATCH 2/2] powerpc: Move cache line size to rtld_global_ro

[Joseph Myers]

I'm seeing all the statically linked glibc tests fail for 32-bit powerpc 
when built with GCC 10:

malloc.c:2394: sysmalloc: Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long) old_end & (pagesize - 1)) == 0)' failed.
Aborted

(A statically linked program with empty main produces that error on 
startup.)

If I build glibc with -fcommon, at least a trivial statically linked 
binary no longer fails.  So I think there may have been something missing 
from the fixes to build with -fno-common; they got glibc building again, 
but not working in the statically linked case.

-- 
Joseph S. Myers
joseph@codesourcery.com