[PATCH] powerpc64: Document binutils 2.29 requirement

[Tulio Magno Quites Machado Filho via Libc-alpha <libc-alpha@sourceware.org>]

glibc has already been using POWER ISA 3.0b instructions (aka. POWER9)
in many places and already has this undocumented dependency.
---
 INSTALL             | 6 +++---
 manual/install.texi | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/INSTALL b/INSTALL
index de75e72760..f2e35da589 100644
--- a/INSTALL
+++ b/INSTALL
@@ -506,9 +506,9 @@ build the GNU C Library:
      moment.  As of release time, GNU 'binutils' 2.32 is the newest
      verified to work to build the GNU C Library.
 
-     For PowerPC 64-bits little-endian (powerpc64le), 'objcopy' is
-     required to support '--update-section'.  This option requires
-     binutils 2.26 or newer.
+     For PowerPC 64-bits little-endian (powerpc64le), 'as' is required
+     to support all POWER ISA 3.0b instructions.  GNU 'binutils' 2.29 or
+     later is known to work.
 
      ARC architecture needs 'binutils' 2.32 or higher for TLS related
      fixes.
diff --git a/manual/install.texi b/manual/install.texi
index 8f26bb2a81..77e219e3d0 100644
--- a/manual/install.texi
+++ b/manual/install.texi
@@ -545,9 +545,9 @@ No other assembler or linker has the necessary functionality at the
 moment. As of release time, GNU @code{binutils} 2.32 is the newest
 verified to work to build @theglibc{}.
 
-For PowerPC 64-bits little-endian (powerpc64le), @command{objcopy} is required
-to support @option{--update-section}.  This option requires binutils 2.26 or
-newer.
+For PowerPC 64-bits little-endian (powerpc64le), @command{as} is required to
+support all POWER ISA 3.0b instructions.  GNU @code{binutils} 2.29 or
+later is known to work.
 
 ARC architecture needs @code{binutils} 2.32 or higher for TLS related fixes.
 
-- 
2.29.2