[PATCH] Documentation/Changes: update binutils version requirement for ARMv7 builds

[Paul Walmsley]

ARMv7 builds now make use of the pldw opcode and the ".arch_extension mp"
pragma.  These aren't supported in binutils prior to 2.21.  So, update
Documentation/Changes accordingly.

Signed-off-by: Paul Walmsley <pwalmsley at nvidia.com>
Cc: Will Deacon <will.deacon at arm.com>
Cc: Russell King <linux at arm.linux.org.uk>
Cc: Stephen Warren <swarren at nvidia.com>
Cc: Thierry Reding <treding at nvidia.com>
Acked-by: Russell King <rmk+kernel at arm.linux.org.uk>

---
Intended for 3.13.

  Documentation/Changes | 3 +++
  1 file changed, 3 insertions(+)

diff --git a/Documentation/Changes b/Documentation/Changes
index b175808..97fcbdf 100644
--- a/Documentation/Changes
+++ b/Documentation/Changes
@@ -67,6 +67,9 @@ assembling the 16-bit boot code, removing the need for as86 to compile
  your kernel.  This change does, however, mean that you need a recent
  release of binutils.

+ARMv7 builds require binutils 2.21 or later due to the use of the pldw
+opcode and ".arch_extension mp".
+
  Perl
  ----

-- 
1.8.1.5