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="Bart vdr. Meulen <bartvdrmeulen@gmail.com>"

reporter_url=""

reporter_comment="Config to build cross-compiler with mingw as kernel type"