binutils/binutils: added 2.21.53 snapshot

binutils 2.21 doesn't recognise the Cortex-M3 SVC instruction when
assembling with -mcpu=all. This was fixed by the 2.21.53 snapshot and
is needed to build RTOSs such as FreeRTOS.

Signed-off-by: Michael Hope <michael.hope@linaro.org>

reporter_name="Harold Grovesteen"

reporter_url="http://sourceware.org/ml/crossgcc/2009-11/msg00052.html"

reporter_comment=""